[Tests] Add unit tests for theme utility functions

[gonzaloriestra]

WHY are these changes introduced?

These changes are introduced to cover the theme utility functions under packages/cli-kit/src/public/node/themes/utils.ts and ensure their behavior is robust and verified against regressions.

WHAT is this pull request doing?

This pull request introduces comprehensive unit tests in packages/cli-kit/src/public/node/themes/utils.test.ts for:

• isDevelopmentTheme
• composeThemeGid
• parseGid
• promptThemeName (by mocking its dependencies)

How to test your changes?

CI

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing — I've identified the correct bump type (patch for bug fixes · minor for new features · major for breaking changes) and added a changeset with pnpm changeset add

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PR created automatically by Jules for task 13360874357651607401 started by @gonzaloriestra

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[gonzaloriestra]

Merge activity

• Jul 23, 2:14 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jul 23, 2:15 PM UTC: @gonzaloriestra added this pull request to the GitHub merge queue with Graphite.