Ensure face icon controller is deactivated when view is detached

Fixes: 197397546

Check AuthBiometricFaceView logs in the below cases:
Test: start auth, dismiss while face is scanning
Test: start auth, turn off screen while face is scanning

Change-Id: I8ed98f80998fce4a1e67e57380ee7f19c811b4d8
1 file changed