Implement framework-specific useId for SSR-compatible component ID generation

[Copilot]

This PR implements framework-specific ID generation using native useId() hooks for React and Vue components to resolve SSR hydration mismatches while maintaining backward compatibility for Angular and Stencil.

Problem

Components that generate unique IDs (form components like textarea, input, select, etc.) were using a custom uuid() function across all frameworks. This caused SSR hydration issues because:

• Server renders with one ID (e.g., textarea-abc123)
• Client hydrates with a different ID (e.g., textarea-def456)
• Results in hydration mismatches and console errors

Solution

Implemented a post-build script that automatically transforms generated components to use framework-appropriate ID generation:

React Components

• Before: const mId = props.id ?? \textarea-${uuid()}`;`
• After: const mId = props.id ?? \textarea-${useId()}`;withimport { useId } from "react"`

Vue Components

• Before: const mId = props.id ?? \textarea-${uuid()}`;`
• After: const mId = props.id ?? \textarea-${useId()}`;withimport { useId } from "vue"`

Angular & Stencil

• Continue using uuid() function (no native useId() support)
• No breaking changes

Changes Made

1. Post-build script (scripts/post-build/use-id.ts) that:

   • Scans React and Vue components for ID generation patterns
   • Adds appropriate useId imports
   • Replaces uuid() with useId() in template literals

2. Updated 8 components in both React and Vue:

   • textarea, switch, select, radio, input, custom-select-list-item, custom-select, checkbox

3. Comprehensive testing:

   • Unit tests verifying correct transformation
   • Verification script confirming implementation
   • Documentation with technical details

Benefits

• ✅ SSR Compatibility: Consistent server/client IDs in React and Vue
• ✅ Framework-Appropriate: Uses each framework's recommended approach
• ✅ Backward Compatible: Angular and Stencil unchanged
• ✅ Zero Breaking Changes: Existing APIs remain the same

Verification

Run the verification script to confirm proper integration:

npx tsx scripts/verify-use-id.ts

This addresses the SSR hydration issue by leveraging framework-native solutions while maintaining compatibility across all supported targets.

Fixes #3419 & #2395

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