[dynamicIO] use new heuristic to track whether server render is dynamic

[gnoff]

Instead of relying on onError just use the timing of the prerender resolution to determine whether the server render completed before aborting.

React is going to remove onError and onPostpone calls from prerender in flight 31715. This is because semantically the error is going to be hidden from the prerender and on resume it might not error. So rather than relying on whether the error callback is called we simply infer whether we are done by checking if the prerender resolved prior to our abort deadline. In our case it is possible we also aborted earlier than the deadline because you can call something like Math.random() which requires the prerender to halt synchronously so we also check the signal status in our deadline task.

We don't expect this to change any semantics so there are no altered tests.

This is only currently implemented in the dynamicIO + PPR case because that is the only case using experimental React with prerender. When dynamicIO is on by itself we still use renderToReadableStream which does not have halt semantics. We will switch to prerender when it is available in React's stable channel

[ijjk]

Tests Passed

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
buildDuration	18.9s	17.1s	N/A
buildDurationCached	16s	13.6s	N/A
nodeModulesSize	409 MB	409 MB	⚠️ +23.4 kB
nextStartRea..uration (ms)	482ms	486ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
1187-HASH.js gzip	50.2 kB	50.2 kB	N/A
8276.HASH.js gzip	169 B	168 B	N/A
8377-HASH.js gzip	5.3 kB	5.3 kB	N/A
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framework-HASH.js gzip	57.5 kB	57.5 kB	N/A
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main-HASH.js gzip	33.8 kB	33.7 kB	N/A
webpack-HASH.js gzip	1.71 kB	1.71 kB	N/A
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Legacy Client Bundles (polyfills)

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Overall change	39.4 kB	39.4 kB	✓

Client Pages

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
_app-HASH.js gzip	193 B	193 B	✓
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css-HASH.js gzip	343 B	342 B	N/A
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script-HASH.js gzip	397 B	397 B	✓
withRouter-HASH.js gzip	323 B	326 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
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Client Build Manifests

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
_buildManifest.js gzip	747 B	745 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
index.html gzip	523 B	523 B	✓
link.html gzip	537 B	538 B	N/A
withRouter.html gzip	519 B	520 B	N/A
Overall change	523 B	523 B	✓

Edge SSR bundle Size

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
edge-ssr.js gzip	128 kB	128 kB	N/A
page.js gzip	203 kB	203 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
middleware-b..fest.js gzip	669 B	667 B	N/A
middleware-r..fest.js gzip	155 B	156 B	N/A
middleware.js gzip	31 kB	31 kB	N/A
edge-runtime..pack.js gzip	844 B	844 B	✓
Overall change	844 B	844 B	✓

Next Runtimes

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
523-experime...dev.js gzip	322 B	322 B	✓
523.runtime.dev.js gzip	314 B	314 B	✓
app-page-exp...dev.js gzip	322 kB	322 kB	N/A
app-page-exp..prod.js gzip	127 kB	127 kB	N/A
app-page-tur..prod.js gzip	140 kB	140 kB	N/A
app-page-tur..prod.js gzip	135 kB	135 kB	N/A
app-page.run...dev.js gzip	312 kB	312 kB	N/A
app-page.run..prod.js gzip	122 kB	122 kB	N/A
app-route-ex...dev.js gzip	37.1 kB	37.1 kB	✓
app-route-ex..prod.js gzip	25.1 kB	25.1 kB	✓
app-route-tu..prod.js gzip	25.1 kB	25.1 kB	✓
app-route-tu..prod.js gzip	24.9 kB	24.9 kB	✓
app-route.ru...dev.js gzip	38.7 kB	38.7 kB	✓
app-route.ru..prod.js gzip	24.9 kB	24.9 kB	✓
pages-api-tu..prod.js gzip	9.56 kB	9.56 kB	✓
pages-api.ru...dev.js gzip	11.4 kB	11.4 kB	✓
pages-api.ru..prod.js gzip	9.56 kB	9.56 kB	✓
pages-turbo...prod.js gzip	21.3 kB	21.3 kB	✓
pages.runtim...dev.js gzip	27 kB	27 kB	✓
pages.runtim..prod.js gzip	21.3 kB	21.3 kB	✓
server.runti..prod.js gzip	916 kB	916 kB	✓
Overall change	1.19 MB	1.19 MB	✓

build cache Overall increase ⚠️

	vercel/next.js canary	gnoff/next.js dio-refactor-server-dynamic	Change
0.pack gzip	2.04 MB	2.04 MB	⚠️ +2.9 kB
index.pack gzip	71.7 kB	71.7 kB	N/A
Overall change	2.04 MB	2.04 MB	⚠️ +2.9 kB

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Commit: 2f10a12