Ensure that cancelling authentication ends up in the correct state

When authentication is canceled from the caller (not by the system),
BiometricService should do the following
1) Inform SystemUI to hide the dialog
2) Send the onError callback to the calling application

SystemUI does not need to send any callbacks (avoid round trip)

Bug: 146234687

Test: com.android.server.biometrics
Test: com.android.systemui.biometrics

Change-Id: Icd3e07d4921870e1e63e125c48caaaa759af2d36