Resolve stream piper on complete shell for renderToReadableStream

[huozhi]

1. Align renderToReadableStream with renderToNodeStream, resolve promise of NodeWritablePiper only when onCompleteShell is called.
2. update webpack to disable chunk loading for web runtime

Item 1 is the preparation for middleware-ssr-loader. Then we can do the following there

try {
   result = await renderToHTML(page)
} catch (e) {
   result = await renderToHTML(errorPage)
}
result.pipe(renderResult)

[shuding]

For tests: now unexpected dynamic chunk load script will be treated as fatal error

This is a blocker I think, because currently import is usable (although there is an error output).

[shuding]

Let's move the webpack change to a separate PR.

[huozhi]

Separate webpack upgration stuff in #31313

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
buildDuration	17.9s	17.8s	-53ms
buildDurationCached	3.6s	3.6s	-21ms
nodeModulesSize	335 MB	335 MB	⚠️ +596 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.926	2.938	⚠️ +0.01
/ avg req/sec	854.47	850.84	⚠️ -3.63
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.369	1.414	⚠️ +0.04
/error-in-render avg req/sec	1825.49	1767.7	⚠️ -57.79

Client Bundles (main, webpack, commons)

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.3 kB	28.3 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.2 kB	72.2 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
_app-HASH.js gzip	1.37 kB	1.37 kB	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	635 B	635 B	✓
image-HASH.js gzip	4.44 kB	4.44 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	1.87 kB	1.87 kB	✓
routerDirect..HASH.js gzip	321 B	321 B	✓
script-HASH.js gzip	383 B	383 B	✓
withRouter-HASH.js gzip	318 B	318 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.3 kB	13.3 kB	✓

Client Build Manifests

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
_buildManifest.js gzip	460 B	460 B	✓
Overall change	460 B	460 B	✓

Rendered Page Sizes

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
index.html gzip	522 B	522 B	✓
link.html gzip	535 B	535 B	✓
withRouter.html gzip	515 B	515 B	✓
Overall change	1.57 kB	1.57 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
buildDuration	19.6s	19.3s	-280ms
buildDurationCached	3.6s	3.5s	-37ms
nodeModulesSize	335 MB	335 MB	⚠️ +596 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.966	2.968	0
/ avg req/sec	842.75	842.22	⚠️ -0.53
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.402	1.406	0
/error-in-render avg req/sec	1783.14	1778.02	⚠️ -5.12

Client Bundles (main, webpack, commons)

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.5 kB	28.5 kB	✓
webpack-HASH.js gzip	1.43 kB	1.43 kB	✓
Overall change	72.5 kB	72.5 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	180 B	180 B	✓
amp-HASH.js gzip	305 B	305 B	✓
css-HASH.js gzip	321 B	321 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	622 B	622 B	✓
image-HASH.js gzip	4.46 kB	4.46 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	1.91 kB	1.91 kB	✓
routerDirect..HASH.js gzip	314 B	314 B	✓
script-HASH.js gzip	375 B	375 B	✓
withRouter-HASH.js gzip	309 B	309 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.2 kB	13.2 kB	✓

Client Build Manifests

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	huozhi/next.js align-readable-stream-impl	Change
index.html gzip	522 B	522 B	✓
link.html gzip	534 B	534 B	✓
withRouter.html gzip	516 B	516 B	✓
Overall change	1.57 kB	1.57 kB	✓

Commit: a6b6eaf