Fix flicker while usudfps screen off unlock - short term version

Flag: com.android.systemui.udfps_screen_off_unlock_flicker
Bug: 384986206
Bug: 408078129
Bug: 407051220
Bug: 407489205
Test: Manually
Test: SystemUITests:DozeServiceHostTest
Test: SystemUITests:DozeTriggersTest
Change-Id: I4192a2c813ec0bbb241f8547817c773890d89243