Pulling out some of the smaller changes that aren't related to the manga controller changes in #7244
(cherry picked from commit 7fdbf40cd23132915bd90cf623e4a69fb560dd26)
# Conflicts:
# app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/MigrationFlags.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/SearchPresenter.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersSettingsSheet.kt
* Add error state to MangaCover
- Add error drawable when thumbnailUrl isn't able to be loaded
- Tweak usage of MangaCover
* Change `contentDescription` to be nullable
As the invoke function makes default nulls
(cherry picked from commit adf02e53fd2da2c889a409a144cf1c81bde7f6f3)