Stop face auth if occluding app doesn't want face auth.

Fixes: 259521464
Test: atest KeyguardUpdateMonitorTest
Test: manually,
    1. Enroll face auth (Bypass or non-bypass doesn't matter)
    2. Lock the phone
    3. Open bouncer to unlock (face auth lock out state doesn't matter).
    4. Enter the pin/pattern/password to unlock
    5. Camera protection ring should not grow in size, scanning animation should not show up.

Change-Id: Ic35d8538a97bdab3ed22456f5055cbe20f1b56a1