Don't allow adjustments for a profile if they're off on the parent

We already re-categorized notifications on profile user when the settings changed on the parent profile, but we weren't applying this setting going forward for new incoming notifications.

Fixes: 416325346
Test: NotificationAssistantsTest, manual
Flag: android.service.notification.notification_classification
Change-Id: I23aa57d99f99dbbba18730f5d0d261b5f4e5a6fd