chore: refactor IssueLabelToken styles

[francinelucca]

Refactor IssueLabelToken to use global data-color-mode attribute for css selector instead of custom local component one from theme

Changelog

Changed

• Refactor IssueLabelToken to use global data-color-mode attribute for css selector instead of custom local component one from theme

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]

⚠️ No Changeset found

Latest commit: fc7e0fb

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.

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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

Refactors IssueLabelToken to rely on the global data-color-mode attribute instead of a component-scoped data-in-color-mode attribute, simplifying theme integration and removing the need for useTheme in the component.

• Removes useTheme dependency and the data-in-color-mode attribute from the component.
• Updates CSS selectors to target ancestry via [data-color-mode], adjusting separate rules for light/auto and dark modes.
• Updates snapshots and adds a changeset for a patch release.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 7 comments.

File	Description
packages/react/src/Token/IssueLabelToken.tsx	Removes theme hook and per-instance color mode data attribute.
packages/react/src/Token/IssueLabelToken.module.css	Replaces local attribute selectors with global data-color-mode selectors; adjusts mode-specific rules.
packages/react/src/TextInputWithTokens/snapshots/TextInputWithTokens.test.tsx.snap	Updates snapshots to reflect removed data-in-color-mode attribute.
.changeset/hungry-beds-fetch.md	Adds patch changeset entry.

[primer-integration]

👋 Hi from github/github-ui! Your integration PR is ready: https://github.com/github/github-ui/pull/4742

[siddharthkp]

Seems like an implementation detail, does this need a changelog?

[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!

[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!

[primer-integration]

🟢 ci completed with status success.