Also fix sort direction can't be changed for default category
(cherry picked from commit 763288ab137505813f951bb02ca3ba9c1590dbc4)
# Conflicts:
# app/src/main/java/eu/kanade/domain/category/interactor/SetSortModeForCategory.kt
# app/src/main/java/eu/kanade/tachiyomi/ui/library/setting/SortDirectionSetting.kt