feat(board): support explicit locale exports

[DR-Univer]

Summary

• add explicit locale publish exports for packages that opt out of wildcard exports
• keep wildcard publish behavior unchanged by default
• improve design Button asChild typing and Switch accessibility semantics for board UI controls

Why

The board packages in pro need stable explicit locale entrypoints during bundling and publishing. Board settings also rely on Univer design controls behaving like accessible switches while preserving existing visual behavior.

Validation

• pnpm --filter @univerjs/design exec vitest run src/components/switch/__tests__/index.spec.tsx --reporter=verbose
• pnpm exec vitest run common/shared/tsdown/utils/cleanup-pkg.spec.ts --reporter=verbose

[github-actions]

View Deployment

#28117188747

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[github-actions]

Playwright test results

 8 passed

Details

 8 tests across 3 suites
 3 minutes, 34 seconds
 7ed15ce
 For more information, see full report and artifacts

[codecov]

Codecov Report

❌ Patch coverage is 88.23529% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.28%. Comparing base (cdae784) to head (7ed15ce).

Files with missing lines	Patch %	Lines
packages/design/src/components/button/Button.tsx	50.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #7150   +/-   ##
=======================================
  Coverage   80.28%   80.28%           
=======================================
  Files        2530     2530           
  Lines      152511   152525   +14     
  Branches    35320    35321    +1     
=======================================
+ Hits       122444   122456   +12     
- Misses      30067    30069    +2     

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