Wake-and-unlock imprevements

Remove MODE_DISMISS_BOUNCER, simplifying dismissal logic
Never wake-up without unlocking when bypassing

Test: unlock with face from AOD2
Test: unlock with face from LS
Test: unlock with face from bouncer
Test: unlock with face from scrimmed bouncer
Fixes: 135571526
Fixes: 132846921
Change-Id: Id468eab8aeed91b6eeadc8bca3b579f977eac2a6