Align React Native OSS/Test Feature Flags (#28677)

## Summary

Makes a few changes to align React Native feature flags for open source
and internal test renderer configurations.

* Enable `enableSchedulingProfiler` for profiling builds.
* Align `ReactFeatureFlags.test-renderer.native.js` (with
`ReactFeatureFlags.native-fb.js`).
  * Enable `enableUseMemoCacheHook`.
  * Enable `enableFizzExternalRuntime`.
  * Disable `alwaysThrottleRetries`.

## How did you test this change?

Ran the following successfully:

```
$ yarn test
$ yarn flow native
$ yarn flow fabric
```

Author: yungsters

packages/shared/forks/ReactFeatureFlags.native-oss.js

@@ -70,7 +70,7 @@ export const enableUseDeferredValueInitialArg = __EXPERIMENTAL__;
 export const enableCPUSuspense = false;
 export const enableDebugTracing = false;
 export const enableAsyncDebugInfo = false;
-export const enableSchedulingProfiler = false;
+export const enableSchedulingProfiler = __PROFILE__;
 export const enableLegacyCache = false;
 export const enableFetchInstrumentation = false;
 export const enablePostpone = false;

packages/shared/forks/ReactFeatureFlags.test-renderer.native.js

@@ -13,7 +13,7 @@ import typeof * as ExportsType from './ReactFeatureFlags.test-renderer';
 export const debugRenderPhaseSideEffectsForStrictMode = false;
 export const enableDebugTracing = false;
 export const enableAsyncDebugInfo = false;
-export const enableSchedulingProfiler = false;
+export const enableSchedulingProfiler = __PROFILE__;
 export const enableProfilerTimer = __PROFILE__;
 export const enableProfilerCommitHooks = __PROFILE__;
 export const enableProfilerNestedUpdatePhase = __PROFILE__;
@@ -40,7 +40,7 @@ export const enableFilterEmptyStringAttributesDOM = true;
 export const enableGetInspectorDataForInstanceInProduction = false;
 export const enableSuspenseAvoidThisFallback = false;
 export const enableSuspenseAvoidThisFallbackFizz = false;
-export const enableCPUSuspense = false;
+export const enableCPUSuspense = true;
 export const enableUseMemoCacheHook = true;
 export const enableUseEffectEventHook = false;
 export const favorSafetyOverHydrationPerf = true;
@@ -67,11 +67,12 @@ export const enableTransitionTracing = false;
 
 export const useModernStrictMode = false;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
+export const enableFizzExternalRuntime = true;
 export const enableDeferRootSchedulingToMicrotask = false;
 
 export const enableAsyncActions = true;
 
-export const alwaysThrottleRetries = true;
+export const alwaysThrottleRetries = false;
 
 export const passChildrenWhenCloningPersistedNodes = false;
 export const enableUseDeferredValueInitialArg = __EXPERIMENTAL__;