Always evaluate callerApp for opted-in sender

The callerApp must be taken in consideration when either the creator
opted in and supplied the caller app or the sender opted in to use the
caller app (for PendingIntent use cases).

Test: atest BackgroundActivityLaunchTest
Bug: 297880036
Change-Id: Ic9582e023749513e136661e924d92006dcb47737
1 file changed