This is a partial revert/evolution of 538dd60580f1b97993620b05d353db883e44b552
- Back to notifications, because Android 12+ may cut off toasts
- Notifications now automatically dismiss after 30s on Android 8+ (taken from J2K)
- Also warn if more than 30 chapters are queued for download
(cherry picked from commit e81bd61e24d4d773dddce7f7fd11713fb511e8fb)
# Conflicts:
# app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt
# app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt
418da04411