Pass in the low light message to be shown in the bouncer

Fixes: 342171473
Test: manuall, go to a dimly lit area. Try face auth on bouncer, the second line should show the low light message
Flag: com.android.systemui.revamped_bouncer_messages
Change-Id: If74ace369ed26c6b70b75b5af09f84cbcf547451
1 file changed