fix: default relative canonical url should not contain search

[huozhi]

What

Strip the search query for the urlPathname passed down to metadata handling.

Why

This is because the urlPathname from staticGenerationStore contains query, so it will contain ?rsc query for client navigation, which lead to the relative path canonical url (e.g. ./) will have the search query along with it. This PR is to remove that and make sure always uses pathname.

Reported by @pacocoursey

Closes NEXT-2963

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
buildDuration	14.6s	14.6s	N/A
buildDurationCached	9s	6.9s	N/A
nodeModulesSize	199 MB	199 MB	⚠️ +2.13 kB
nextStartRea..uration (ms)	415ms	420ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
2453-HASH.js gzip	31.4 kB	31.3 kB	N/A
3304.HASH.js gzip	181 B	181 B	✓
3f784ff6-HASH.js gzip	53.7 kB	53.7 kB	✓
8299-HASH.js gzip	5.04 kB	5.04 kB	N/A
framework-HASH.js gzip	45.2 kB	45.2 kB	✓
main-app-HASH.js gzip	241 B	241 B	✓
main-HASH.js gzip	32.2 kB	32.2 kB	N/A
webpack-HASH.js gzip	1.68 kB	1.68 kB	N/A
Overall change	99.3 kB	99.3 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	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/metadata-canonical-url-navigation	Change
_app-HASH.js gzip	196 B	197 B	N/A
_error-HASH.js gzip	184 B	184 B	✓
amp-HASH.js gzip	505 B	505 B	✓
css-HASH.js gzip	324 B	325 B	N/A
dynamic-HASH.js gzip	2.5 kB	2.5 kB	N/A
edge-ssr-HASH.js gzip	258 B	258 B	✓
head-HASH.js gzip	352 B	352 B	✓
hooks-HASH.js gzip	370 B	371 B	N/A
image-HASH.js gzip	4.21 kB	4.21 kB	✓
index-HASH.js gzip	259 B	259 B	✓
link-HASH.js gzip	2.67 kB	2.67 kB	N/A
routerDirect..HASH.js gzip	314 B	312 B	N/A
script-HASH.js gzip	386 B	386 B	✓
withRouter-HASH.js gzip	309 B	309 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	6.57 kB	6.57 kB	✓

Client Build Manifests

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
_buildManifest.js gzip	481 B	484 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
index.html gzip	530 B	528 B	N/A
link.html gzip	541 B	540 B	N/A
withRouter.html gzip	525 B	522 B	N/A
Overall change	0 B	0 B	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
edge-ssr.js gzip	95.3 kB	95.3 kB	N/A
page.js gzip	3.04 kB	3.04 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
middleware-b..fest.js gzip	626 B	626 B	✓
middleware-r..fest.js gzip	151 B	151 B	✓
middleware.js gzip	25.5 kB	25.5 kB	N/A
edge-runtime..pack.js gzip	839 B	839 B	✓
Overall change	1.62 kB	1.62 kB	✓

Next Runtimes

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
app-page-exp...dev.js gzip	170 kB	170 kB	N/A
app-page-exp..prod.js gzip	97 kB	97 kB	N/A
app-page-tur..prod.js gzip	98.8 kB	98.8 kB	N/A
app-page-tur..prod.js gzip	93 kB	93 kB	N/A
app-page.run...dev.js gzip	144 kB	144 kB	N/A
app-page.run..prod.js gzip	91.5 kB	91.5 kB	N/A
app-route-ex...dev.js gzip	21.4 kB	21.4 kB	✓
app-route-ex..prod.js gzip	15.1 kB	15.1 kB	✓
app-route-tu..prod.js gzip	15.1 kB	15.1 kB	✓
app-route-tu..prod.js gzip	14.8 kB	14.8 kB	✓
app-route.ru...dev.js gzip	21 kB	21 kB	✓
app-route.ru..prod.js gzip	14.8 kB	14.8 kB	✓
pages-api-tu..prod.js gzip	9.55 kB	9.55 kB	✓
pages-api.ru...dev.js gzip	9.82 kB	9.82 kB	✓
pages-api.ru..prod.js gzip	9.55 kB	9.55 kB	✓
pages-turbo...prod.js gzip	22.5 kB	22.5 kB	✓
pages.runtim...dev.js gzip	23.1 kB	23.1 kB	✓
pages.runtim..prod.js gzip	22.4 kB	22.4 kB	✓
server.runti..prod.js gzip	51 kB	51 kB	✓
Overall change	250 kB	250 kB	✓

build cache Overall increase ⚠️

	vercel/next.js canary	vercel/next.js fix/metadata-canonical-url-navigation	Change
0.pack gzip	1.58 MB	1.58 MB	N/A
index.pack gzip	106 kB	106 kB	⚠️ +646 B
Overall change	106 kB	106 kB	⚠️ +646 B

Diff details

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Commit: 3fe3bee