Fix exportRuntime and react-18 concurrent tests

[huozhi]

• disable concurrent test cases in short term to improve them later
• remove bad alias in next.config.js

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
buildDuration	16.5s	16.1s	-405ms
buildDurationCached	3.4s	3.5s	⚠️ +86ms
nodeModulesSize	207 MB	207 MB	⚠️ +7 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.601	2.678	⚠️ +0.08
/ avg req/sec	961.05	933.44	⚠️ -27.61
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.268	1.275	⚠️ +0.01
/error-in-render avg req/sec	1971	1960.31	⚠️ -10.69

Client Bundles (main, webpack, commons)

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28 kB	28 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	71.9 kB	71.9 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
_app-HASH.js gzip	1.23 kB	1.23 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	✓
334f979574ae..6f4.css gzip	106 B	106 B	✓
Overall change	13.1 kB	13.1 kB	✓

Client Build Manifests

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
index.html gzip	534 B	534 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	528 B	528 B	✓
Overall change	1.61 kB	1.61 kB	✓

---

Default Build with SWC (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
buildDuration	14.8s	14.3s	-481ms
buildDurationCached	3.8s	3.3s	-532ms
nodeModulesSize	207 MB	207 MB	⚠️ +7 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.781	2.845	⚠️ +0.06
/ avg req/sec	898.99	878.87	⚠️ -20.12
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.345	1.298	-0.05
/error-in-render avg req/sec	1859.06	1926.41	+67.35

Client Bundles (main, webpack, commons)

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.2 kB	28.2 kB	✓
webpack-HASH.js gzip	1.43 kB	1.43 kB	✓
Overall change	72 kB	72 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
_app-HASH.js gzip	1.22 kB	1.22 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	621 B	621 B	✓
image-HASH.js gzip	4.46 kB	4.46 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	1.9 kB	1.9 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	✓
334f979574ae..6f4.css gzip	106 B	106 B	✓
Overall change	13.1 kB	13.1 kB	✓

Client Build Manifests

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	huozhi/next.js fix/react-18-tests	Change
index.html gzip	534 B	534 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.61 kB	1.61 kB	✓

Commit: 0ddfba2