fix(SelectPanel): remove hidden attribute from selection Radio

[francinelucca]

Closes https://github.com/github/primer/issues/6002

Fixes bug where Radio is not being displayed in single select modals when elements with attribute hidden have display: none

Changelog

Removed

• hidden prop from SelectPanel Radio Selection

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: 67b222e

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	Patch
@primer/styled-react	Patch

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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!

[Copilot]

Pull Request Overview

Removes the hidden attribute from the visual-only Radio used inside Selection to fix a bug where it was not displayed in single-select modals when [hidden] elements are globally styled with display: none.

• Removed hidden attribute from the Radio to allow it to render visually.
• Retained aria-hidden and tabIndex to keep it out of the accessibility tree, but the comment was not updated to explain the change.

[siddharthkp]

Sorry, to be able to review this, can I ask for more context. Why we add hidden (in #6330) and why we are we removing it now.

Update: Got some context on internal slack