PreDraw scrim on AOD -> UNLOCKED

Scheduling a frame isn't enough when directly transitioning to unlocked
from AOD (ie: security is set to None), need to update the scrim
immediatley so that the nav bar has the correct color.

Test: manual
Bug: 177238312
Change-Id: Ibe50e9749439ef1f31ac098af3da067a30f97861