[ESLint] Remove error when file patterns are unmatched + ESLint setup changes

[housseindjirdeh]

This PR does the following:

• Disables the errorOnUnmatchedPattern property for ESLint to not error when file patterns are unmatched (examples: empty directory, directory ignored in .eslintignore). Both next lint and next build are updated. Closes next lint does not work with src directory #26155
• Deletes conformance integration tests that are outdated and rely on the old webpack conformance plugin
• Includes a new test/.eslintrc.json file to configure ESLint specifically for test files
• Updates failing test cases where which were failing with the new test/.eslintrc.json config
• Removed .eslintignore for test/integration/async-modules (ported from Remove webpack 4 support #26915)
• Added support for top level await to Next.js eslint preset (ported from Remove webpack 4 support #26915)

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
buildDuration	11.8s	11.8s	⚠️ +46ms
buildDurationCached	2.8s	2.7s	-68ms
nodeModulesSize	49.3 MB	49.3 MB	⚠️ +253 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
/ failed reqs	0	0	✓
/ total time (seconds)	1.826	1.807	-0.02
/ avg req/sec	1369.32	1383.24	+13.92
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.04	1.039	0
/error-in-render avg req/sec	2403.23	2406.19	+2.96

Client Bundles (main, webpack, commons)

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
359.HASH.js gzip	3.09 kB	3.09 kB	✓
framework-HASH.js gzip	42 kB	42 kB	✓
main-HASH.js gzip	20.9 kB	20.9 kB	✓
webpack-HASH.js gzip	1.49 kB	1.49 kB	✓
Overall change	67.6 kB	67.6 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
polyfills-HASH.js gzip	31.1 kB	31.1 kB	✓
Overall change	31.1 kB	31.1 kB	✓

Client Pages

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
_app-HASH.js gzip	803 B	803 B	✓
_error-HASH.js gzip	3.18 kB	3.18 kB	✓
amp-HASH.js gzip	526 B	526 B	✓
css-HASH.js gzip	329 B	329 B	✓
hooks-HASH.js gzip	903 B	903 B	✓
image-HASH.js gzip	5.69 kB	5.69 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	1.66 kB	1.66 kB	✓
routerDirect..HASH.js gzip	319 B	319 B	✓
withRouter-HASH.js gzip	320 B	320 B	✓
bb14e60e810b..30f.css gzip	125 B	125 B	✓
Overall change	14.1 kB	14.1 kB	✓

Client Build Manifests

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
_buildManifest.js gzip	419 B	419 B	✓
Overall change	419 B	419 B	✓

Rendered Page Sizes

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
index.html gzip	531 B	531 B	✓
link.html gzip	545 B	545 B	✓
withRouter.html gzip	524 B	524 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Webpack 4 Mode (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
buildDuration	9.4s	9.5s	⚠️ +51ms
buildDurationCached	3.7s	3.7s	-29ms
nodeModulesSize	49.3 MB	49.3 MB	⚠️ +253 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
/ failed reqs	0	0	✓
/ total time (seconds)	1.933	1.995	⚠️ +0.06
/ avg req/sec	1293.42	1252.96	⚠️ -40.46
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.015	1.045	⚠️ +0.03
/error-in-render avg req/sec	2463.76	2393.17	⚠️ -70.59

Client Bundles (main, webpack, commons)

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
14.HASH.js gzip	3.11 kB	3.11 kB	✓
677f882d2ed8..HASH.js gzip	13.9 kB	13.9 kB	✓
framework.HASH.js gzip	41.8 kB	41.8 kB	✓
main-HASH.js gzip	8.17 kB	8.17 kB	✓
webpack-HASH.js gzip	1.19 kB	1.19 kB	✓
Overall change	68.1 kB	68.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
polyfills-HASH.js gzip	31.3 kB	31.3 kB	✓
Overall change	31.3 kB	31.3 kB	✓

Client Pages

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
_app-HASH.js gzip	791 B	791 B	✓
_error-HASH.js gzip	3.83 kB	3.83 kB	✓
amp-HASH.js gzip	531 B	531 B	✓
css-HASH.js gzip	333 B	333 B	✓
hooks-HASH.js gzip	910 B	910 B	✓
index-HASH.js gzip	230 B	230 B	✓
link-HASH.js gzip	1.64 kB	1.64 kB	✓
routerDirect..HASH.js gzip	297 B	297 B	✓
withRouter-HASH.js gzip	293 B	293 B	✓
e025d2764813..52f.css gzip	125 B	125 B	✓
Overall change	8.98 kB	8.98 kB	✓

Client Build Manifests

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
_buildManifest.js gzip	418 B	418 B	✓
Overall change	418 B	418 B	✓

Rendered Page Sizes

	vercel/next.js canary	housseindjirdeh/next.js bug/26155	Change
index.html gzip	574 B	574 B	✓
link.html gzip	585 B	585 B	✓
withRouter.html gzip	568 B	568 B	✓
Overall change	1.73 kB	1.73 kB	✓

Commit: f09a6ce

[ijjk]

Failing test suites

Commit: f09a6ce

test/acceptance/ReactRefreshLogBox.dev.test.js

• server-side only compilation errors

Expand output

● server-side only compilation errors

ScriptTimeoutError: script timeout
  (Session info: headless chrome=91.0.4472.114)

  72 |
  73 |             // Wait for application to re-hydrate:
> 74 |             await browser.executeAsyncScript(function () {
     |             ^
  75 |               var callback = arguments[arguments.length - 1]
  76 |               if (window.__NEXT_HYDRATED) {
  77 |                 callback()

  at Object.throwDecodedError (../node_modules/selenium-webdriver/lib/error.js:550:15)
  at parseHttpResponse (../node_modules/selenium-webdriver/lib/http.js:565:13)
  at Executor.execute (../node_modules/selenium-webdriver/lib/http.js:491:26)
      at runMicrotasks (<anonymous>)
  at Proxy.execute (../node_modules/selenium-webdriver/lib/webdriver.js:700:17)
  at Object.patch (acceptance/helpers.js:74:13)
  at Object.<anonymous> (acceptance/ReactRefreshLogBox.dev.test.js:1415:3)

[timneutkens]

Looks great, thanks for fixing/porting these @housseindjirdeh 💯