[Re-land] Make prerendering always non-blocking: Add missing feature flag checks (#31238)

This is a partial re-land of
#31056. We saw breakages surface
after the original land and had to revert. Now that they've been fixed,
let's try this again. This time we'll split up the commits to give us
more control of testing and rollout internally.

Original PR: #31056
Original Commit:
2a9fb44
Revert PR: #31080

Commit description:
```
Neglected to wrap some places in the enableSiblingPrerendering flag.
```

Co-authored-by: Andrew Clark <git@andrewclark.io>

DiffTrain build for [13411e4](13411e4)

Author: jackpope

Diff for: compiled-rn/VERSION_NATIVE_FB

@@ -1 +1 @@
-19.0.0-native-fb-de43d560-20241009
+19.0.0-native-fb-13411e45-20241014

Diff for: compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOM-dev.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<550c10c16de0559e53cbd039c2e4f6d9>>
+ * @generated SignedSource<<1d8dd9e8ce69a34a08cc90461cf3ab97>>
  */
 
 "use strict";
@@ -420,5 +420,5 @@ __DEV__ &&
     exports.useFormStatus = function () {
       return resolveDispatcher().useHostTransitionStatus();
     };
-    exports.version = "19.0.0-native-fb-de43d560-20241009";
+    exports.version = "19.0.0-native-fb-13411e45-20241014";
   })();

Diff for: compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOM-prod.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<4ba3a2044ec1d4234e283594a2af1550>>
+ * @generated SignedSource<<2dd40d3277960a40fd61ad48c151ffa8>>
  */
 
 "use strict";
@@ -203,4 +203,4 @@ exports.useFormState = function (action, initialState, permalink) {
 exports.useFormStatus = function () {
   return ReactSharedInternals.H.useHostTransitionStatus();
 };
-exports.version = "19.0.0-native-fb-de43d560-20241009";
+exports.version = "19.0.0-native-fb-13411e45-20241014";

Diff for: compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOM-profiling.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<4ba3a2044ec1d4234e283594a2af1550>>
+ * @generated SignedSource<<2dd40d3277960a40fd61ad48c151ffa8>>
  */
 
 "use strict";
@@ -203,4 +203,4 @@ exports.useFormState = function (action, initialState, permalink) {
 exports.useFormStatus = function () {
   return ReactSharedInternals.H.useHostTransitionStatus();
 };
-exports.version = "19.0.0-native-fb-de43d560-20241009";
+exports.version = "19.0.0-native-fb-13411e45-20241014";

Diff for: compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOMClient-dev.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<8180b974f916c25525536140b7314c8a>>
+ * @generated SignedSource<<d81dd6637407a77fecc43d347e5de1c5>>
  */
 
 /*
@@ -1046,7 +1046,8 @@ __DEV__ &&
             : ((pingedLanes &= nonIdlePendingLanes),
               0 !== pingedLanes
                 ? (nextLanes = getHighestPriorityLanes(pingedLanes))
-                : root ||
+                : enableSiblingPrerendering &&
+                  !root &&
                   ((warmLanes = nonIdlePendingLanes & ~warmLanes),
                   0 !== warmLanes &&
                     (nextLanes = getHighestPriorityLanes(warmLanes)))))
@@ -1055,7 +1056,8 @@ __DEV__ &&
             ? (nextLanes = getHighestPriorityLanes(nonIdlePendingLanes))
             : 0 !== pingedLanes
               ? (nextLanes = getHighestPriorityLanes(pingedLanes))
-              : root ||
+              : enableSiblingPrerendering &&
+                !root &&
                 ((warmLanes = pendingLanes & ~warmLanes),
                 0 !== warmLanes &&
                   (nextLanes = getHighestPriorityLanes(warmLanes))));
@@ -1182,7 +1184,8 @@ __DEV__ &&
         remainingLanes &= ~lane;
       }
       0 !== spawnedLane && markSpawnedDeferredLane(root, spawnedLane, 0);
-      0 !== suspendedRetryLanes &&
+      enableSiblingPrerendering &&
+        0 !== suspendedRetryLanes &&
         0 === updatedLanes &&
         (root.suspendedLanes |=
           suspendedRetryLanes & ~(previouslyPendingLanes & ~finishedLanes));
@@ -14095,7 +14098,8 @@ __DEV__ &&
         ((retryQueue =
           22 !== workInProgress.tag ? claimNextRetryLane() : 536870912),
         (workInProgress.lanes |= retryQueue),
-        (workInProgressSuspendedRetryLanes |= retryQueue));
+        enableSiblingPrerendering &&
+          (workInProgressSuspendedRetryLanes |= retryQueue));
     }
     function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) {
       if (!isHydrating)
@@ -15277,7 +15281,9 @@ __DEV__ &&
       suspendedLanes &= ~workInProgressRootInterleavedUpdatedLanes;
       root.suspendedLanes |= suspendedLanes;
       root.pingedLanes &= ~suspendedLanes;
-      didSkipSuspendedSiblings || (root.warmLanes |= suspendedLanes);
+      enableSiblingPrerendering &&
+        !didSkipSuspendedSiblings &&
+        (root.warmLanes |= suspendedLanes);
       didSkipSuspendedSiblings = root.expirationTimes;
       for (var lanes = suspendedLanes; 0 < lanes; ) {
         var index = 31 - clz32(lanes),
@@ -25304,11 +25310,11 @@ __DEV__ &&
     };
     (function () {
       var isomorphicReactPackageVersion = React.version;
-      if ("19.0.0-native-fb-de43d560-20241009" !== isomorphicReactPackageVersion)
+      if ("19.0.0-native-fb-13411e45-20241014" !== isomorphicReactPackageVersion)
         throw Error(
           'Incompatible React versions: The "react" and "react-dom" packages must have the exact same version. Instead got:\n  - react:      ' +
             (isomorphicReactPackageVersion +
-              "\n  - react-dom:  19.0.0-native-fb-de43d560-20241009\nLearn more: https://react.dev/warnings/version-mismatch")
+              "\n  - react-dom:  19.0.0-native-fb-13411e45-20241014\nLearn more: https://react.dev/warnings/version-mismatch")
         );
     })();
     ("function" === typeof Map &&
@@ -25345,11 +25351,11 @@ __DEV__ &&
       !(function () {
         var internals = {
           bundleType: 1,
-          version: "19.0.0-native-fb-de43d560-20241009",
+          version: "19.0.0-native-fb-13411e45-20241014",
           rendererPackageName: "react-dom",
           currentDispatcherRef: ReactSharedInternals,
           findFiberByHostInstance: getClosestInstanceFromNode,
-          reconcilerVersion: "19.0.0-native-fb-de43d560-20241009"
+          reconcilerVersion: "19.0.0-native-fb-13411e45-20241014"
         };
         internals.overrideHookState = overrideHookState;
         internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -25493,5 +25499,5 @@ __DEV__ &&
       listenToAllSupportedEvents(container);
       return new ReactDOMHydrationRoot(initialChildren);
     };
-    exports.version = "19.0.0-native-fb-de43d560-20241009";
+    exports.version = "19.0.0-native-fb-13411e45-20241014";
   })();

Diff for: compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOMClient-prod.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<86bcc49ed3494f6591ac576b591609e0>>
+ * @generated SignedSource<<3cc21b65f550413946b26a12d53d1166>>
  */
 
 /*
@@ -674,7 +674,8 @@ function getNextLanes(root, wipLanes) {
         : ((pingedLanes &= nonIdlePendingLanes),
           0 !== pingedLanes
             ? (nextLanes = getHighestPriorityLanes(pingedLanes))
-            : root ||
+            : enableSiblingPrerendering &&
+              !root &&
               ((warmLanes = nonIdlePendingLanes & ~warmLanes),
               0 !== warmLanes &&
                 (nextLanes = getHighestPriorityLanes(warmLanes)))))
@@ -683,7 +684,8 @@ function getNextLanes(root, wipLanes) {
         ? (nextLanes = getHighestPriorityLanes(nonIdlePendingLanes))
         : 0 !== pingedLanes
           ? (nextLanes = getHighestPriorityLanes(pingedLanes))
-          : root ||
+          : enableSiblingPrerendering &&
+            !root &&
             ((warmLanes = pendingLanes & ~warmLanes),
             0 !== warmLanes &&
               (nextLanes = getHighestPriorityLanes(warmLanes))));
@@ -803,7 +805,8 @@ function markRootFinished(
     remainingLanes &= ~lane;
   }
   0 !== spawnedLane && markSpawnedDeferredLane(root, spawnedLane, 0);
-  0 !== suspendedRetryLanes &&
+  enableSiblingPrerendering &&
+    0 !== suspendedRetryLanes &&
     0 === updatedLanes &&
     (root.suspendedLanes |=
       suspendedRetryLanes & ~(previouslyPendingLanes & ~finishedLanes));
@@ -10081,7 +10084,8 @@ function scheduleRetryEffect(workInProgress, retryQueue) {
     ((retryQueue =
       22 !== workInProgress.tag ? claimNextRetryLane() : 536870912),
     (workInProgress.lanes |= retryQueue),
-    (workInProgressSuspendedRetryLanes |= retryQueue));
+    enableSiblingPrerendering &&
+      (workInProgressSuspendedRetryLanes |= retryQueue));
 }
 function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) {
   if (!isHydrating)
@@ -11051,7 +11055,9 @@ function markRootSuspended(
   suspendedLanes &= ~workInProgressRootInterleavedUpdatedLanes;
   root.suspendedLanes |= suspendedLanes;
   root.pingedLanes &= ~suspendedLanes;
-  didSkipSuspendedSiblings || (root.warmLanes |= suspendedLanes);
+  enableSiblingPrerendering &&
+    !didSkipSuspendedSiblings &&
+    (root.warmLanes |= suspendedLanes);
   didSkipSuspendedSiblings = root.expirationTimes;
   for (var lanes = suspendedLanes; 0 < lanes; ) {
     var index$6 = 31 - clz32(lanes),
@@ -15598,14 +15604,14 @@ ReactDOMHydrationRoot.prototype.unstable_scheduleHydration = function (target) {
 };
 var isomorphicReactPackageVersion$jscomp$inline_1691 = React.version;
 if (
-  "19.0.0-native-fb-de43d560-20241009" !==
+  "19.0.0-native-fb-13411e45-20241014" !==
   isomorphicReactPackageVersion$jscomp$inline_1691
 )
   throw Error(
     formatProdErrorMessage(
       527,
       isomorphicReactPackageVersion$jscomp$inline_1691,
-      "19.0.0-native-fb-de43d560-20241009"
+      "19.0.0-native-fb-13411e45-20241014"
     )
   );
 ReactDOMSharedInternals.findDOMNode = function (componentOrElement) {
@@ -15627,11 +15633,11 @@ ReactDOMSharedInternals.findDOMNode = function (componentOrElement) {
 };
 var internals$jscomp$inline_2144 = {
   bundleType: 0,
-  version: "19.0.0-native-fb-de43d560-20241009",
+  version: "19.0.0-native-fb-13411e45-20241014",
   rendererPackageName: "react-dom",
   currentDispatcherRef: ReactSharedInternals,
   findFiberByHostInstance: getClosestInstanceFromNode,
-  reconcilerVersion: "19.0.0-native-fb-de43d560-20241009"
+  reconcilerVersion: "19.0.0-native-fb-13411e45-20241014"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2145 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -15735,4 +15741,4 @@ exports.hydrateRoot = function (container, initialChildren, options) {
   listenToAllSupportedEvents(container);
   return new ReactDOMHydrationRoot(initialChildren);
 };
-exports.version = "19.0.0-native-fb-de43d560-20241009";
+exports.version = "19.0.0-native-fb-13411e45-20241014";

Diff for: compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOMClient-profiling.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<4824b23c5f4ff96fb4802c9f8adf2471>>
+ * @generated SignedSource<<1f9731688cb275b818de4cd35d1795ac>>
  */
 
 /*
@@ -739,7 +739,8 @@ function getNextLanes(root, wipLanes) {
         : ((pingedLanes &= nonIdlePendingLanes),
           0 !== pingedLanes
             ? (nextLanes = getHighestPriorityLanes(pingedLanes))
-            : root ||
+            : enableSiblingPrerendering &&
+              !root &&
               ((warmLanes = nonIdlePendingLanes & ~warmLanes),
               0 !== warmLanes &&
                 (nextLanes = getHighestPriorityLanes(warmLanes)))))
@@ -748,7 +749,8 @@ function getNextLanes(root, wipLanes) {
         ? (nextLanes = getHighestPriorityLanes(nonIdlePendingLanes))
         : 0 !== pingedLanes
           ? (nextLanes = getHighestPriorityLanes(pingedLanes))
-          : root ||
+          : enableSiblingPrerendering &&
+            !root &&
             ((warmLanes = pendingLanes & ~warmLanes),
             0 !== warmLanes &&
               (nextLanes = getHighestPriorityLanes(warmLanes))));
@@ -868,7 +870,8 @@ function markRootFinished(
     remainingLanes &= ~lane;
   }
   0 !== spawnedLane && markSpawnedDeferredLane(root, spawnedLane, 0);
-  0 !== suspendedRetryLanes &&
+  enableSiblingPrerendering &&
+    0 !== suspendedRetryLanes &&
     0 === updatedLanes &&
     (root.suspendedLanes |=
       suspendedRetryLanes & ~(previouslyPendingLanes & ~finishedLanes));
@@ -10552,7 +10555,8 @@ function scheduleRetryEffect(workInProgress, retryQueue) {
     ((retryQueue =
       22 !== workInProgress.tag ? claimNextRetryLane() : 536870912),
     (workInProgress.lanes |= retryQueue),
-    (workInProgressSuspendedRetryLanes |= retryQueue));
+    enableSiblingPrerendering &&
+      (workInProgressSuspendedRetryLanes |= retryQueue));
 }
 function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) {
   if (!isHydrating)
@@ -11589,7 +11593,9 @@ function markRootSuspended(
   suspendedLanes &= ~workInProgressRootInterleavedUpdatedLanes;
   root.suspendedLanes |= suspendedLanes;
   root.pingedLanes &= ~suspendedLanes;
-  didSkipSuspendedSiblings || (root.warmLanes |= suspendedLanes);
+  enableSiblingPrerendering &&
+    !didSkipSuspendedSiblings &&
+    (root.warmLanes |= suspendedLanes);
   didSkipSuspendedSiblings = root.expirationTimes;
   for (var lanes = suspendedLanes; 0 < lanes; ) {
     var index$6 = 31 - clz32(lanes),
@@ -16255,14 +16261,14 @@ ReactDOMHydrationRoot.prototype.unstable_scheduleHydration = function (target) {
 };
 var isomorphicReactPackageVersion$jscomp$inline_1781 = React.version;
 if (
-  "19.0.0-native-fb-de43d560-20241009" !==
+  "19.0.0-native-fb-13411e45-20241014" !==
   isomorphicReactPackageVersion$jscomp$inline_1781
 )
   throw Error(
     formatProdErrorMessage(
       527,
       isomorphicReactPackageVersion$jscomp$inline_1781,
-      "19.0.0-native-fb-de43d560-20241009"
+      "19.0.0-native-fb-13411e45-20241014"
     )
   );
 ReactDOMSharedInternals.findDOMNode = function (componentOrElement) {
@@ -16284,11 +16290,11 @@ ReactDOMSharedInternals.findDOMNode = function (componentOrElement) {
 };
 var internals$jscomp$inline_1788 = {
   bundleType: 0,
-  version: "19.0.0-native-fb-de43d560-20241009",
+  version: "19.0.0-native-fb-13411e45-20241014",
   rendererPackageName: "react-dom",
   currentDispatcherRef: ReactSharedInternals,
   findFiberByHostInstance: getClosestInstanceFromNode,
-  reconcilerVersion: "19.0.0-native-fb-de43d560-20241009",
+  reconcilerVersion: "19.0.0-native-fb-13411e45-20241014",
   getLaneLabelMap: function () {
     for (
       var map = new Map(), lane = 1, index$286 = 0;
@@ -16407,4 +16413,4 @@ exports.hydrateRoot = function (container, initialChildren, options) {
   listenToAllSupportedEvents(container);
   return new ReactDOMHydrationRoot(initialChildren);
 };
-exports.version = "19.0.0-native-fb-de43d560-20241009";
+exports.version = "19.0.0-native-fb-13411e45-20241014";