Opt in recents PendingIntent for BAL

With BAL hardening in V PendingIntent creator's need to expliciitly opt
in to grant their BAL privileges.
The change is a noop unless the `bal_require_opt_in_by_pending_intent_creator` flag is enabled.

Bug: 296478951
Flag: NA
Test: atest NexusLauncherTests:com.android.quickstep.FallbackRecentsTest NexusLauncherTests:com.android.quickstep.StartLauncherViaGestureTests
Change-Id: I7f2f4f3613f70b6ec0c398803a140ab93dcf1a03
1 file changed