Navigating to the compose bouncer should trigger face auth

Use sceneInteractor as the source of truth for bouncer visibility when flexiglass is enabled.

Fixes: 361672949
Fixes: 357649556
Test: atest DeviceEntryFaceAuthInteractorTest
Flag: com.android.systemui.scene_container
Test: manually,
  lock device
  go to bouncer
  face auth should run
Change-Id: I0c319c40323ee1e3b4c81e5534c7d83cb44e5aaa