Remove the warning for build worker when custom webpack present

[huozhi]

Drop the warning of build worker due to the common usage of custom webpack

Closes NEXT-2148

[ijjk]

Stats from current PR

Default Build

General

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
buildDuration	12.9s	12.8s	N/A
buildDurationCached	7.2s	6s	N/A
nodeModulesSize	200 MB	200 MB	N/A
nextStartRea..uration (ms)	421ms	435ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
193.HASH.js gzip	181 B	182 B	N/A
3f784ff6-HASH.js gzip	53.4 kB	53.4 kB	✓
433-HASH.js gzip	29 kB	29 kB	N/A
framework-HASH.js gzip	45.2 kB	45.2 kB	✓
main-app-HASH.js gzip	239 B	242 B	N/A
main-HASH.js gzip	31.8 kB	31.8 kB	N/A
webpack-HASH.js gzip	1.7 kB	1.7 kB	N/A
Overall change	98.6 kB	98.6 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
_app-HASH.js gzip	194 B	195 B	N/A
_error-HASH.js gzip	183 B	181 B	N/A
amp-HASH.js gzip	504 B	502 B	N/A
css-HASH.js gzip	321 B	321 B	✓
dynamic-HASH.js gzip	2.5 kB	2.5 kB	N/A
edge-ssr-HASH.js gzip	255 B	253 B	N/A
head-HASH.js gzip	350 B	349 B	N/A
hooks-HASH.js gzip	369 B	369 B	✓
image-HASH.js gzip	4.18 kB	4.18 kB	N/A
index-HASH.js gzip	255 B	256 B	N/A
link-HASH.js gzip	2.61 kB	2.61 kB	✓
routerDirect..HASH.js gzip	312 B	311 B	N/A
script-HASH.js gzip	385 B	383 B	N/A
withRouter-HASH.js gzip	307 B	308 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	3.4 kB	3.4 kB	✓

Client Build Manifests

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
_buildManifest.js gzip	484 B	485 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
index.html gzip	528 B	526 B	N/A
link.html gzip	540 B	539 B	N/A
withRouter.html gzip	524 B	522 B	N/A
Overall change	0 B	0 B	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
edge-ssr.js gzip	93.9 kB	93.9 kB	N/A
page.js gzip	148 kB	148 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
middleware-b..fest.js gzip	624 B	626 B	N/A
middleware-r..fest.js gzip	151 B	151 B	✓
middleware.js gzip	37.5 kB	37.5 kB	N/A
edge-runtime..pack.js gzip	1.92 kB	1.92 kB	✓
Overall change	2.07 kB	2.07 kB	✓

Next Runtimes

	vercel/next.js canary	vercel/next.js fix/remove-build-worker-warning	Change
app-page-exp...dev.js gzip	169 kB	169 kB	✓
app-page-exp..prod.js gzip	95.6 kB	95.6 kB	✓
app-page-tur..prod.js gzip	96.3 kB	96.3 kB	✓
app-page-tur..prod.js gzip	90.8 kB	90.8 kB	✓
app-page.run...dev.js gzip	142 kB	142 kB	✓
app-page.run..prod.js gzip	90.2 kB	90.2 kB	✓
app-route-ex...dev.js gzip	24.2 kB	24.2 kB	✓
app-route-ex..prod.js gzip	16.8 kB	16.8 kB	✓
app-route-tu..prod.js gzip	16.8 kB	16.8 kB	✓
app-route-tu..prod.js gzip	16.4 kB	16.4 kB	✓
app-route.ru...dev.js gzip	23.6 kB	23.6 kB	✓
app-route.ru..prod.js gzip	16.4 kB	16.4 kB	✓
pages-api-tu..prod.js gzip	9.39 kB	9.39 kB	✓
pages-api.ru...dev.js gzip	9.67 kB	9.67 kB	✓
pages-api.ru..prod.js gzip	9.39 kB	9.39 kB	✓
pages-turbo...prod.js gzip	22 kB	22 kB	✓
pages.runtim...dev.js gzip	22.6 kB	22.6 kB	✓
pages.runtim..prod.js gzip	22 kB	22 kB	✓
server.runti..prod.js gzip	49.7 kB	49.7 kB	✓
Overall change	943 kB	943 kB	✓

Commit: eb54e85

[ijjk]

Failing test suites

Commit: eb54e85

pnpm test-start test/e2e/app-dir/navigation/navigation.test.ts

• app dir - navigation > navigation between pages and app > should not continously initiate a mpa navigation to the same URL when router state changes

Expand output

● app dir - navigation › navigation between pages and app › should not continously initiate a mpa navigation to the same URL when router state changes

page.waitForSelector: Timeout 60000ms exceeded.
=========================== logs ===========================
waiting for locator('#link-to-slow-page')
  locator resolved to visible <a href="/slow-page" id="link-to-slow-page">To /slow-page</a>
============================================================

  422 |     return this.chain(() => {
  423 |       return page
> 424 |         .waitForSelector(selector, { timeout, state: 'attached' })
      |          ^
  425 |         .then(async (el) => {
  426 |           // it seems selenium waits longer and tests rely on this behavior
  427 |           // so we wait for the load event fire before returning

  at waitForSelector (lib/browsers/playwright.ts:424:10)

Read more about building and testing Next.js in contributing.md.

[styfle]

@huozhi I think we need to keep this document because old versions will link to it so we don't want to cause a 404.

Instead of deleting it, we can update it to mention something like "npm i next@latest to remove this warning"

[huozhi]

👍 good catch
#60826