bugfix(ActionList.Item): Remove styles from enabled ActionList.Item

[langermank]

Closes https://github.com/github/primer/issues/4745
Closes https://github.com/github/primer/issues/4752

Changelog

New

Changed

We discovered that the ActionList.Item was applying the old styles from styled components and the new CSS modules classnames whenever a sxProp was being passed in. This was causing some visual bugs in production. Removing the extra style here fixes the issue

Removed

Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

Testing & Reviewing

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Storybook)
• Changes are SSR compatible
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge
• (GitHub staff only) Integration tests pass at github/github (Learn more about how to run integration tests)

[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github depends on. If you are GitHub staff, we recommend testing these changes with github/github using the integration workflow. Thanks!

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	105.42 KB (+0.05% 🔺)
packages/react/dist/browser.umd.js	105.82 KB (-0.01% 🔽)

[primer-integration]

👋 Hi from github/github! Your integration PR is ready: https://github.com/github/github/pull/360875

[changeset-bot]

🦋 Changeset detected

Latest commit: 707fdaa

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

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@primer/react	Patch

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[joshblack]

Just wanted to ask, does style need to be added anywhere else when sx is passed since it's no longer being merged?

[jonrohan]

Just wanted to ask, does style need to be added anywhere else when sx is passed since it's no longer being merged?

Style shouldn't have been included here, it was mistakenly added when the classes takes care of the styles. We found we were applying styled components styles and CSS modules styles in this case