chore: Migrate typography tokens to use stable hashes

[avinashbot]

Description

See cloudscape-design/theming-core#190. We want design token CSS variable names to be more stable, and introducing a new stable method of determining the token suffix (based on token name and package version, not the value).

Out of an abundance of caution, we're migrating tokens in batches. A previous PR (#4718, merged 2 weeks ago) migrated all border tokens. This PR does the same for typography tokens.

Related links, issue #, if available: rzZV6TJY6Zav (Chorus)

How has this been tested?

Will dry-run build this just in case.

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[avinashbot]

Adding more token examples; I feel like I'll probably release the color token changes in smaller batches than all of "color-*" at once.

[Copilot]

Pull request overview

Migrates typography design tokens to the stable-hash versioning scheme (suffix derived from token name + package version rather than token value), continuing the phased rollout that previously migrated border tokens.

Changes:

• Expanded the default token version groups to include typography-related CSS variable prefixes (font-, letter-spacing-, line-height-).
• Updated unit tests for getTokenVersions to reflect the expanded default group behavior and additional matching scenarios.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
build-tools/utils/token-versions.js	Adds typography token prefix patterns to the default stable-hash version group list.
build-tools/utils/tests/token-versions.test.js	Extends fixtures/expectations for the updated grouping logic and first-match behavior.

Comments suppressed due to low confidence (1)

build-tools/utils/tests/token-versions.test.js:26

• With the added letter-spacing-* and line-height-* fixtures, this expectation should assert they get versioned by the default groups as well.

  expect(getTokenVersions(variablesMap)).toEqual({
    borderRadiusButton: 'v3-1',
    borderWidthField: 'v3-1',
    fontFamilyBase: 'v3-1',
  });

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.63%. Comparing base (409fa38) to head (44e3163).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4845   +/-   ##
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  Coverage   97.63%   97.63%           
=======================================
  Files         957      957           
  Lines       31097    31097           
  Branches    11435    11434    -1     
=======================================
  Hits        30361    30361           
- Misses        689      729   +40     
+ Partials       47        7   -40     

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