Fix data encoder and decoder to use stream in renderer

[shuding]

There are several places where the decoder should have stream: true. Also changed the encodeText(extraChunk + decodeText(chunk)) pattern to just emit two chunks.

Bug

• Related issues linked using fixes #number
• Integration tests added
• Errors have helpful link attached, see contributing.md

Feature

• Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
• Related issues linked using fixes #number
• Integration tests added
• Documentation added
• Telemetry added. In case of a feature if it's used or not.
• Errors have helpful link attached, see contributing.md

Documentation / Examples

• Make sure the linting passes by running yarn lint

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	shuding/next.js shu/4837	Change
buildDuration	19.1s	19.6s	⚠️ +570ms
buildDurationCached	7.6s	7.4s	-215ms
nodeModulesSize	477 MB	477 MB	⚠️ +215 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	shuding/next.js shu/4837	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.8	3.758	-0.04
/ avg req/sec	657.82	665.31	+7.49
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.67	1.667	0
/error-in-render avg req/sec	1496.79	1499.54	+2.75

Client Bundles (main, webpack)

	vercel/next.js canary	shuding/next.js shu/4837	Change
925.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42 kB	42 kB	✓
main-HASH.js gzip	28.5 kB	28.5 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	72.1 kB	72.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	shuding/next.js shu/4837	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	shuding/next.js shu/4837	Change
_app-HASH.js gzip	1.36 kB	1.36 kB	✓
_error-HASH.js gzip	192 B	192 B	✓
amp-HASH.js gzip	309 B	309 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	3.05 kB	3.05 kB	✓
head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	920 B	920 B	✓
image-HASH.js gzip	5.64 kB	5.64 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	2.32 kB	2.32 kB	✓
routerDirect..HASH.js gzip	320 B	320 B	✓
script-HASH.js gzip	387 B	387 B	✓
withRouter-HASH.js gzip	319 B	319 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	15.9 kB	15.9 kB	✓

Client Build Manifests

	vercel/next.js canary	shuding/next.js shu/4837	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	shuding/next.js shu/4837	Change
index.html gzip	531 B	531 B	✓
link.html gzip	545 B	545 B	✓
withRouter.html gzip	525 B	525 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	shuding/next.js shu/4837	Change
buildDuration	22.1s	22.3s	⚠️ +167ms
buildDurationCached	7.4s	7.4s	⚠️ +17ms
nodeModulesSize	477 MB	477 MB	⚠️ +215 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	shuding/next.js shu/4837	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.815	3.885	⚠️ +0.07
/ avg req/sec	655.3	643.43	⚠️ -11.87
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.719	1.829	⚠️ +0.11
/error-in-render avg req/sec	1454.75	1367.09	⚠️ -87.66

Client Bundles (main, webpack)

	vercel/next.js canary	shuding/next.js shu/4837	Change
925.HASH.js gzip	178 B	178 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.8 kB	28.8 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.7 kB	72.7 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	shuding/next.js shu/4837	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	shuding/next.js shu/4837	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	179 B	179 B	✓
amp-HASH.js gzip	313 B	313 B	✓
css-HASH.js gzip	325 B	325 B	✓
dynamic-HASH.js gzip	3.03 kB	3.03 kB	✓
head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	921 B	921 B	✓
image-HASH.js gzip	5.7 kB	5.7 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	2.38 kB	2.38 kB	✓
routerDirect..HASH.js gzip	322 B	322 B	✓
script-HASH.js gzip	388 B	388 B	✓
withRouter-HASH.js gzip	317 B	317 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	15.9 kB	15.9 kB	✓

Client Build Manifests

	vercel/next.js canary	shuding/next.js shu/4837	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	shuding/next.js shu/4837	Change
index.html gzip	531 B	531 B	✓
link.html gzip	544 B	544 B	✓
withRouter.html gzip	526 B	526 B	✓
Overall change	1.6 kB	1.6 kB	✓

Commit: eee84dd