AOD: Fix flicker when unlocking with fingerprint

FingerprintUnlockController assumed that not pulsing is the same
as the screen is off. But with AOD this is no longer true. Instead
we now also trigger that flow if the screen is on and dozing.

Change-Id: Iad2fd65c50ad359d50bb357b41c57df123665df2
Fixes: 62885230
Test: Unlock from AOD with fingerprint; ensure that the status bar stays in AOD mode during the transition