Don't wakeup from the pickup gesture when kg is occluded

Also finish() wallet activity onStopped.
Consequently, the activity will always close on screen off.
For example, this includes when the activities are launched via
their lock screen affordances + qs tiles.

Fixes: 194925434
Test: manual, atest DozeTriggersTest
Test: atest UdfpsControllerTest UdfpsKeyguardViewControllerTest
Change-Id: I9856571e104ef05aec93d32056cd2097c2d2a1da