Remove onBeforeNotificationAdded call

By moving where appOps of notifications gets set

When appOps change:
 StatusBar detects appOp change and propogates change to
 ForegroundServiceController which stores appOp change
 (in case notification hasn't been added yet).
 This controller will also update the appOps of the relevant
 pending/visible notification

When a notification is added/updated:
 ForegroundServiceNotificationListener updates the
 relevant notification's appOps

Test: atest NotificationEntryManagerTest NotificationDataTest
Test: atest ForegroundServiceControllerTest
Change-Id: I3af4a2cf599d3eba7a0ba6006b3919730e5e658a