UI: Fix default selected addon panel

[shilman]

Closes N/A

What I did

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-storybook/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	78.3 MB	78.3 MB	168 B	2.85	0%
initSize	131 MB	131 MB	3.01 kB	2.68	0%
diffSize	53 MB	53 MB	2.84 kB	0.67	0%
buildSize	7.17 MB	7.17 MB	-29 B	0.26	0%
buildSbAddonsSize	1.85 MB	1.85 MB	0 B	0.23	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	1.86 MB	1.86 MB	-29 B	-6.16	0%
buildSbPreviewSize	0 B	0 B	0 B	-	-
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	3.91 MB	3.91 MB	-29 B	-0.32	0%
buildPreviewSize	3.26 MB	3.26 MB	0 B	0.35	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	10.2s	-12s -180ms	-1.27	🔰-119%
generateTime	19.4s	26.4s	6.9s	4	🔺26.2%
initTime	12.6s	17.4s	4.7s	2.45	🔺27.3%
buildTime	9.9s	11.7s	1.7s	2.94	🔺15%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	4.8s	6s	1.1s	0.29	19.6%
devManagerResponsive	3.5s	4.3s	753ms	0.18	17.4%
devManagerHeaderVisible	816ms	797ms	-19ms	-0.06	-2.4%
devManagerIndexVisible	852ms	890ms	38ms	0.26	4.3%
devStoryVisibleUncached	3.8s	4s	225ms	0.25	5.6%
devStoryVisible	853ms	889ms	36ms	0.2	4%
devAutodocsVisible	850ms	825ms	-25ms	0.61	-3%
devMDXVisible	724ms	859ms	135ms	1.15	15.7%
buildManagerHeaderVisible	847ms	1s	165ms	0.65	16.3%
buildManagerIndexVisible	941ms	1.1s	197ms	0.67	17.3%
buildStoryVisible	836ms	972ms	136ms	0.61	14%
buildAutodocsVisible	608ms	716ms	108ms	-0.18	15.1%
buildMDXVisible	669ms	739ms	70ms	0.81	9.5%

Greptile Summary

This PR modifies the default selected panel behavior in Storybook's UI initialization, removing the ChromaUI addon panel as the default selection.

• Modified defaultLayoutState.selectedPanel in code/core/src/manager-api/modules/layout.ts from 'chromaui/addon-visual-tests/panel' to undefined
• Change ensures no specific addon panel is selected by default, improving compatibility for users without ChromaUI addon
• User-selected panel preferences are still preserved through the setOptions API

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 594ae92.

Command	Status	Duration	Result
nx affected -t check -c production --parallel=7	✅ Succeeded	1s	View ↗
nx run-many -t build -c production --parallel=3	✅ Succeeded	4s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-02-05 05:56:57 UTC

[greptile-apps]

LGTM

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