1.13.5 Thumbnail performance

Thumb job limit is a performance optimization for tablets and foldables.

Previously grid cells on tablets launched over 40 coroutine thumb jobs that slowed down the app,

they are now limited to an 8-slot queue.

1. Added universal thumb job limit.
2. Added thumb job limit advanced settings.
3. Fixed PDF photo grid thumb ANR.
4. Better folder cover toggle logic.
5. Hide library favorites section.
6. Use media3 player for local files.
7. Library update auto clean stale history records.
8. Skip library live media observer if no source has been added.
9. Library media live update auto pause.
10. Bugfixes.

This is a stable version. Reporting bugs will help future development.

Full Changelog: 1.12.50...1.13.5