Fix issues with unlocking during a swipe on the lockscreen.

This could cause keyguard to remain visible if a biometric
auth event arrived while swiping on the lockscreen.

Fixes: 265661878
Test: while a bouncer swipe is in progress, finger/face auth
Test: while swiping away an unlocked lockscreen, fingerprint auth
Change-Id: Ia06f48f092414360c3c9d3cb16cb8fb42591f5b8