Migrate ActionMenu tests to vitest

[adierkens]

Closes #6383

Migrates the ActionMenu tests from jest to vitest.

In converting the tests, they highlighted an issue with the focus handling (#6434) that were unexpectedly being suppressed in the jest tests. There are 2 tests that I explicitly skipped b/c they were directly testing this behavior, and 1 that needed a slightly different setup procedure to account for the bug. These should be removed when #6434 is addressed

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
  • Only testing files changed

[changeset-bot]

⚠️ No Changeset found

Latest commit: 77c1ca2

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[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	90.03 KB (0%)
packages/react/dist/browser.umd.js	90.13 KB (0%)

[Copilot]

Pull Request Overview

This PR migrates ActionMenu tests from Jest to Vitest as part of the broader testing framework migration. The migration revealed focus handling issues that were previously suppressed in Jest tests, requiring some tests to be skipped until the underlying focus trap bug is resolved.

• Migrates ActionMenu test suite from Jest to Vitest
• Updates mock functions from jest.fn() to vi.fn()
• Skips two tests that expose focus handling bugs and adjusts one test to work around the issue

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
packages/react/vitest.config.browser.mts	Adds ActionMenu test files to Vitest browser configuration
packages/react/src/ActionMenu/ActionMenu.test.tsx	Migrates test suite from Jest to Vitest with necessary adjustments
packages/react/jest.config.js	Excludes ActionMenu directory from Jest configuration