3/n: Move task stack listener to SystemUI

Simplifies the dismissal of the dialog, and allows for better
synchronization of when the client should receive the error. The only time
that BiometricService should dismiss the dialog is when authentication
is canceled due to another client, which is almost always due to
allowed-but-weird app behavior.

Bug: 135082347

Test: atest BiometricServiceTest
Test: atest BiometricDialogImplTest
Test: atest CommandQueueTest
Change-Id: I10daa798115e51af8a854759e30033c28e6636ba