* make `SourceState` similar to `MigrateState`
* Review Changes
(cherry picked from commit bd45bf7407716bceec5cc226d3680676bb211fea)
# Conflicts:
# app/src/main/java/eu/kanade/presentation/source/SourceScreen.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt