Fix bouncer race condition

Bouncer would get stuck if authentication method changed after view
inflation.

Bug: 149773776
Bug: 149828540
Test: atest PlatformScenarioTests:android.platform.test.scenario.sysui.lockscreen.LockscreenWithInvalidPIN
Change-Id: I39ee2ec2e2ba9b6cf7dfba6b8141efc8b380b48e