Lukasoppermann/radio disabled fix

[lukasoppermann]

Closes https://github.com/github/primer/issues/6255
Relevant Slack thread: https://github.slack.com/archives/CSGAVNZ19/p1764777458569129

Radio button uses wrong colors when disabled and checked

Changelog

New

Changed

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)

[changeset-bot]

🦋 Changeset detected

Latest commit: dd54466

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

This PR includes changesets to release 1 package

Name	Type
@primer/react	Patch

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[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github-ui depends on. If you are GitHub staff, test these changes with github/github-ui using the integration workflow. Or, apply the integration-tests: skipped manually label to skip these checks.

[Copilot]

Pull request overview

This PR fixes the disabled state styling for checked Radio controls by replacing incorrect generic tokens with appropriate control-specific design tokens. The change ensures visual consistency with other form controls like Checkbox and aligns with the Primer design system's token naming conventions.

Key changes:

• Updated disabled checked radio styling to use control-checked-fgColor-disabled and control-checked-bgColor-disabled tokens instead of fgColor-muted
• Added a changeset documenting this as a patch release

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/react/src/Radio/Radio.module.css	Updated disabled checked state to use correct control-specific design tokens for background and border colors
.changeset/forty-aliens-shine.md	Added changeset documenting the token correction as a patch release

[llastflowers]

Looks great! ✅

I also created and connected an issue for this in Primer Quality since it is definitely a quality improvement, so we can track this as part of the current sprint!