CPC: Correct path to the @storybook/theming/create alias

[Averethel]

Closes #28566

What I did

The path to the @storybook/theming/create included package.json which made it impossible to resolve the alias.

Before

 '@storybook/theming/create': '<localPath>/node_modules/storybook/package.json/core/theming/create.js',

After

 '@storybook/theming/create': '<localPath>/node_modules/storybook/core/theming/create.js',

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

• integrate storybook in a project
• create a custom theme
• it should work now

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	248 B	1.09	0%
initSize	198 MB	198 MB	-13 kB	-0.3	0%
diffSize	121 MB	121 MB	-13.3 kB	-0.32	0%
buildSize	7.6 MB	7.59 MB	-2.45 kB	-0.09	0%
buildSbAddonsSize	1.63 MB	1.63 MB	0 B	1.97	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	2.3 MB	2.3 MB	-2.45 kB	-0.33	-0.1%
buildSbPreviewSize	349 kB	349 kB	0 B	2	0%
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	4.47 MB	4.47 MB	-2.45 kB	-0.13	-0.1%
buildPreviewSize	3.12 MB	3.12 MB	0 B	1.73	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	7.2s	23.1s	15.8s	1.53	🔺68.5%
generateTime	23.1s	21s	-2s -87ms	-0.77	-9.9%
initTime	24s	22.3s	-1s -673ms	-0.66	-7.5%
buildTime	15.2s	16.3s	1.1s	1.57	🔺7.1%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	7.8s	8.7s	907ms	0.24	10.4%
devManagerResponsive	5.2s	5.6s	433ms	-0.02	7.6%
devManagerHeaderVisible	740ms	926ms	186ms	2.34	🔺20.1%
devManagerIndexVisible	776ms	965ms	189ms	2.53	🔺19.6%
devStoryVisibleUncached	1.3s	1.2s	-149ms	-0.24	-11.9%
devStoryVisible	797ms	987ms	190ms	2.48	🔺19.3%
devAutodocsVisible	687ms	832ms	145ms	1.3	🔺17.4%
devMDXVisible	686ms	750ms	64ms	0.24	8.5%
buildManagerHeaderVisible	744ms	937ms	193ms	1.48	🔺20.6%
buildManagerIndexVisible	746ms	944ms	198ms	1.45	🔺21%
buildStoryVisible	793ms	991ms	198ms	1.39	🔺20%
buildAutodocsVisible	664ms	794ms	130ms	0.46	16.4%
buildMDXVisible	728ms	1s	347ms	6.07	🔺32.3%

[greptile-apps]

PR Summary

• Fixed incorrect path for @storybook/theming/create alias
• Removed package.json from alias path for better resolution

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[Averethel]

@ndelangen extra comma slipped in the GitHub in-lint editing. It's fixed now and the build passes locally