Next.js: Fix wrong Next.js framework reference

[valentinpalkovic]

Closes N/A

What I did

Fixing a wrong import reference in @storybook/experimental-nextjs-vite

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook canary-release-pr.yml --field pr=<PR_NUMBER>

name	before	after	diff	z	%
createSize	0 B	0 B	0 B	-	-
generateSize	76.5 MB	76.5 MB	0 B	1.61	0%
initSize	161 MB	161 MB	880 B	-0.16	0%
diffSize	84.8 MB	84.8 MB	880 B	-0.17	0%
buildSize	7.48 MB	7.48 MB	26 B	0.74	0%
buildSbAddonsSize	1.62 MB	1.62 MB	0 B	1.53	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	2.31 MB	2.31 MB	2 B	0.73	0%
buildSbPreviewSize	352 kB	352 kB	0 B	-	0%
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	4.47 MB	4.47 MB	2 B	0.74	0%
buildPreviewSize	3.01 MB	3.01 MB	24 B	0.74	0%
testBuildSize	0 B	0 B	0 B	-	-
testBuildSbAddonsSize	0 B	0 B	0 B	-	-
testBuildSbCommonSize	0 B	0 B	0 B	-	-
testBuildSbManagerSize	0 B	0 B	0 B	-	-
testBuildSbPreviewSize	0 B	0 B	0 B	-	-
testBuildStaticSize	0 B	0 B	0 B	-	-
testBuildPrebuildSize	0 B	0 B	0 B	-	-
testBuildPreviewSize	0 B	0 B	0 B	-	-

name	before	after	diff	z	%
createTime	22.4s	6.9s	-15s -478ms	-1.31	🔰-223.3%
generateTime	20s	24.5s	4.4s	0.35	18.3%
initTime	16.3s	22.3s	5.9s	1.04	26.8%
buildTime	15.3s	11.6s	-3s -698ms	-0.88	-31.9%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	6.8s	7.1s	272ms	-0.19	3.8%
devManagerResponsive	4.2s	4.6s	312ms	-0.12	6.8%
devManagerHeaderVisible	712ms	784ms	72ms	-0.24	9.2%
devManagerIndexVisible	758ms	822ms	64ms	-0.25	7.8%
devStoryVisibleUncached	1.3s	1.3s	16ms	-0.25	1.2%
devStoryVisible	756ms	820ms	64ms	-0.26	7.8%
devAutodocsVisible	646ms	713ms	67ms	-0.15	9.4%
devMDXVisible	660ms	759ms	99ms	0.11	13%
buildManagerHeaderVisible	668ms	750ms	82ms	0.03	10.9%
buildManagerIndexVisible	674ms	759ms	85ms	0.02	11.2%
buildStoryVisible	739ms	836ms	97ms	0.18	11.6%
buildAutodocsVisible	609ms	735ms	126ms	0.68	17.1%
buildMDXVisible	652ms	644ms	-8ms	-0.39	-1.2%

Greptile Summary

This PR updates import references in the experimental Next.js with Vite setup to ensure correct framework usage.

• Changed import in code/frameworks/experimental-nextjs-vite/src/export-mocks/headers/cookies.ts from '@storybook/nextjs/headers.mock' to '@storybook/experimental-nextjs-vite/headers.mock'
• Removed unused imports of 'cookies' and 'headers' from '@storybook/nextjs/headers.mock' in code/frameworks/nextjs/src/preview.tsx
• These changes improve consistency and prevent potential issues related to mismatched mocks in the experimental framework

[greptile-apps]

LGTM

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