fix: add missing onUpdateTrack prop to Track component

Fixed "onUpdateTrack is not defined" error by:
- Added onUpdateTrack to TrackProps interface
- Added onUpdateTrack to Track component destructuring
- Passed onUpdateTrack prop from TrackList to Track

This prop is required for:
- Track height resizing functionality
- Automation lane updates
- General track property updates

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

components/tracks/TrackList.tsx

@@ -114,6 +114,7 @@ export function TrackList({
             onNameChange={(name) =>
               onUpdateTrack(track.id, { name })
             }
+            onUpdateTrack={onUpdateTrack}
             onSeek={onSeek}
             onLoadAudio={(buffer) =>
               onUpdateTrack(track.id, { audioBuffer: buffer })