observeFavorites
Deprecated
Use observeFavoritesState() to receive a lean per-record snapshot (id, type, point) on each structural change. If you need the full details, fetch them via getFavoritesV2().
Emits updates to the favorites list whenever favorites are added, removed, or modified.
Return
Flow that emits a list of FavoritePlace objects when favorites are updated Event type: EventType.FAVORITES_UPDATED.id