Supporting more non-default close activity callback for PB

Provide extra close activity callbacks which predictive back can play
other ahead-of-time animatin, and calls to corresponding method when
back gesture is invoked.

Flag: com.android.window.flags.predictive_back_system_override_callback
Bug: 362938401
Test: atest BackGestureInvokedTest OnBackInvokedCallbackGestureTest
Change-Id: I84cb1ecc8b7f189eeaed1f5aa8f48addddd10dd2