Controls: Add disableSave parameter

[valentinpalkovic]

Closes #28377

What I did

Added a disableSave parameter to parameters.controls to be able to disable the "save toolbar" when adjusting controls.

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!

1. Run a Next.js sandbox for template
2. Open Storybook in your browser
3. Access a story and change controls: The save toolbar should appear
4. Shutdown Storybook
5. Go to .storybook/preview.ts and set parameters.controls.disableSave: true
6. Open Storybook
7. Access a story and change controls: The save toolbar should not appear.

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	76.4 MB	76.4 MB	0 B	-0.66	0%
initSize	198 MB	198 MB	45 B	2.82	0%
diffSize	122 MB	122 MB	45 B	3.65	0%
buildSize	7.6 MB	7.6 MB	31 B	Infinity	0%
buildSbAddonsSize	1.63 MB	1.63 MB	31 B	Infinity	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	2.3 MB	2.3 MB	0 B	-	0%
buildSbPreviewSize	349 kB	349 kB	0 B	-	0%
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	4.47 MB	4.47 MB	31 B	Infinity	0%
buildPreviewSize	3.12 MB	3.12 MB	0 B	-	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	6.7s	25.1s	18.3s	1.64	🔺73.1%
generateTime	20.3s	21.7s	1.3s	-0.17	6.3%
initTime	21s	22.2s	1.2s	-0.21	5.4%
buildTime	14.2s	14.6s	452ms	-0.2	3.1%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	11.9s	8.4s	-3s -458ms	-0.27	-40.7%
devManagerResponsive	7.4s	5.4s	-2s -27ms	-0.65	-37.2%
devManagerHeaderVisible	1s	792ms	-255ms	-0.58	-32.2%
devManagerIndexVisible	1s	826ms	-248ms	-0.52	-30%
devStoryVisibleUncached	1.6s	1.3s	-240ms	-0.12	-17.3%
devStoryVisible	1.1s	852ms	-250ms	-0.54	-29.3%
devAutodocsVisible	1s	780ms	-243ms	-0.14	-31.2%
devMDXVisible	875ms	710ms	-165ms	-0.48	-23.2%
buildManagerHeaderVisible	1s	727ms	-283ms	-0.76	-38.9%
buildManagerIndexVisible	1s	734ms	-295ms	-0.75	-40.2%
buildStoryVisible	1s	777ms	-315ms	-0.77	-40.5%
buildAutodocsVisible	939ms	659ms	-280ms	-0.88	-42.5%
buildMDXVisible	1s	673ms	-343ms	-0.49	-51%

Greptile Summary

Introduced a disableSave parameter to the Storybook Controls addon, allowing users to disable the "save toolbar" when adjusting controls.

• Updated code/addons/controls/src/ControlsPanel.tsx to include disableSave in parameters.controls and conditionally render the SaveStory component.
• Modified docs/essentials/controls.mdx to document the new disableSave parameter, providing clear usage instructions.

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[greptile-apps]

LGTM

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