feat(Token): Migrate to CSS modules behind feature flag Pt 2

[randall-krauskopf]

Related To: https://github.com/github/primer/issues/4367

This PR is part 2 of breaking apart a larger PR into grokkable parts.

[changeset-bot]

🦋 Changeset detected

Latest commit: d61bc5c

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	Minor

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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!

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	98.94 KB (+0.16% 🔺)
packages/react/dist/browser.umd.js	99.28 KB (+0.3% 🔺)

[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]

😢 Hi from github/github. The integration workflow has failed: https://github.com/github/github/actions/runs/11841732950

[primer-integration]

🔴 golden-jobs completed with status failure.