Toolbars: Suppress deprecation warning when using dynamic icons

[ValeraS]

Closes #25760

What I did

Removed deprecation warnings

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

1. Run a sandbox yarn start
2. Open Storybook in your browser
3. Open Theme menu
4. There are no warnings in the console

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	78.4 MB	78.4 MB	0 B	2.04	0%
initSize	144 MB	144 MB	32 B	-0.17	0%
diffSize	65.1 MB	65.1 MB	32 B	-0.3	0%
buildSize	6.83 MB	6.83 MB	32 B	-0.41	0%
buildSbAddonsSize	1.51 MB	1.51 MB	32 B	-3.66	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	1.86 MB	1.86 MB	0 B	-0.4	0%
buildSbPreviewSize	271 kB	271 kB	0 B	-4.36	0%
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	3.83 MB	3.83 MB	32 B	-0.41	0%
buildPreviewSize	3 MB	3 MB	0 B	0.57	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	18.5s	26.4s	7.9s	1.49	🔺29.9%
generateTime	21.4s	20.2s	-1s -170ms	-0.16	-5.8%
initTime	15.6s	18.8s	3.1s	2.9	🔺16.6%
buildTime	8.4s	8.6s	258ms	-0.16	3%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	5.5s	6s	433ms	0.31	7.2%
devManagerResponsive	3.3s	3.6s	265ms	0.07	7.3%
devManagerHeaderVisible	608ms	587ms	-21ms	0.09	-3.6%
devManagerIndexVisible	632ms	651ms	19ms	-0.05	2.9%
devStoryVisibleUncached	856ms	1.1s	256ms	0.4	23%
devStoryVisible	631ms	621ms	-10ms	-0.23	-1.6%
devAutodocsVisible	442ms	593ms	151ms	1.48	🔺25.5%
devMDXVisible	501ms	596ms	95ms	0.47	15.9%
buildManagerHeaderVisible	598ms	615ms	17ms	0.55	2.8%
buildManagerIndexVisible	609ms	629ms	20ms	0.47	3.2%
buildStoryVisible	592ms	617ms	25ms	0.53	4.1%
buildAutodocsVisible	464ms	484ms	20ms	0.01	4.1%
buildMDXVisible	472ms	456ms	-16ms	-0.26	-3.5%

Greptile Summary

Adds __suppressDeprecationWarning prop to Icons component in the toolbar addon to temporarily silence console warnings about deprecated icon usage.

• Modified code/addons/toolbars/src/components/ToolbarMenuListItem.tsx to add __suppressDeprecationWarning={true} to Icons component
• Addresses issue [Bug]: deprecation warnings when older icons are being used #25760 where toolbar icons were generating deprecation warnings in console
• Provides temporary fix while migration to new icon system is pending

[greptile-apps]

LGTM

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[yannbf]

Thank you so much for your contribution!