add explicit test for parallel routes in a root layout

[ztanner]

Didn't seem like we had any tests that explicitly check a non-nested parallel route works in a root layout, so adding one here.

Closes NEXT-3317

[ztanner]

• add explicit test for parallel routes in a root layout #65338 👈
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Stats from current PR

Default Build (Increase detected ⚠️)

General

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
buildDuration	17.7s	15.2s	N/A
buildDurationCached	8.8s	7.5s	N/A
nodeModulesSize	360 MB	360 MB	✓
nextStartRea..uration (ms)	422ms	419ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
1103-HASH.js gzip	31.9 kB	31.9 kB	N/A
1a9f679d-HASH.js gzip	53.5 kB	53.5 kB	N/A
335-HASH.js gzip	5.05 kB	5.05 kB	✓
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main-HASH.js gzip	31.6 kB	31.6 kB	N/A
webpack-HASH.js gzip	1.65 kB	1.65 kB	N/A
Overall change	50.4 kB	50.4 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

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Client Build Manifests

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
_buildManifest.js gzip	483 B	484 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
index.html gzip	528 B	529 B	N/A
link.html gzip	541 B	540 B	N/A
withRouter.html gzip	524 B	523 B	N/A
Overall change	0 B	0 B	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
edge-ssr.js gzip	94.8 kB	94.8 kB	N/A
page.js gzip	182 kB	182 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
middleware-b..fest.js gzip	621 B	625 B	N/A
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middleware.js gzip	25.7 kB	25.7 kB	N/A
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Overall change	995 B	995 B	✓

Next Runtimes

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app-page-exp...dev.js gzip	171 kB	171 kB	✓
app-page-exp..prod.js gzip	98.8 kB	98.8 kB	✓
app-page-tur..prod.js gzip	100 kB	100 kB	✓
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app-route.ru..prod.js gzip	15 kB	15 kB	✓
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server.runti..prod.js gzip	51.7 kB	51.7 kB	✓
Overall change	964 kB	964 kB	✓

build cache Overall increase ⚠️

	vercel/next.js canary	vercel/next.js 05-03-add_explicit_test_for_parallel_routes_in_a_root_layout	Change
0.pack gzip	1.62 MB	1.62 MB	N/A
index.pack gzip	113 kB	113 kB	⚠️ +377 B
Overall change	113 kB	113 kB	⚠️ +377 B

Diff details

Diff for edge-ssr.js

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Commit: a794a25