Home Assistant Dashboard picker fix.
- Registered HOMEii Flow with window.customCards using the element type expected by Home Assistant's card picker.
- Updated stub configuration to omit type, while preserving normal YAML usage with type: custom:homeii-music-flow.
- Disabled live picker preview and clear stale picker metadata from older loaded bundles so new cards do not open through the compact preview path.
- Bumped the package/card version to 5.1.3 and rebuilt dist.
Verification:
- npm run build
- npm run lint (warnings only)
- npm test: 60 passed
- node --check src/homeii-music-flow.js
- node --check dist/homeii-music-flow.js