It previously only attempted this after deleting a list of chapters, so it wasn't applicable
when deleting from Library or after unfavoriting an entry.
Closes#8594
(cherry picked from commit 5c37347cecc99582752ee500171e8480008c836e)
# Conflicts:
# app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadManager.kt
aefdc2adbe