Remove support for sx from the ActionList component in @primer/react/deprecated

[liuliu-dev]

Closes #6774, https://github.com/github/primer/issues/5908

This pull request makes significant updates to the deprecated ActionList component in @primer/react, focusing on removing the sx prop, eliminating styled-components usage, and migrating styles to CSS modules for better maintainability and performance. It also refactors related components (Group, Header, Divider, and Item) to use the new styling approach and updates their interfaces accordingly.

Changelog

New

• ActionList and subcomponents wrappers for @primer/styled-react

Changed

• move deprecated components to subfolder in @primer/styled-react

Removed

• sx support from deprecated ActionList and subcomponents

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)

[changeset-bot]

🦋 Changeset detected

Latest commit: 8bcca65

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

This PR includes changesets to release 2 packages

Name	Type
@primer/react	Major
@primer/styled-react	Major

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[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!

[primer-integration]

🟢 ci completed with status success.

[github-actions]

👋 Hi, there are new commits since the last successful integration test. We recommend running the integration workflow once more, unless you are sure the new changes do not affect github/github. Thanks!

[github-actions]

👋 Hi, there are new commits since the last successful integration test. We recommend running the integration workflow once more, unless you are sure the new changes do not affect github/github. Thanks!