Enable KeyguardStateCallbackInteractor in flexi for dismiss callbacks.

SceneContainerStartable is checking for unlock events, so the dismiss callback is not triggered for swipe unlocks. We could listen for transitions to Scenes.Gone, but then we have to filter out Shade transitions, etc.

Dismiss callbacks just want to know when you can see the app, so, WmLsVis makes sense.

Bug: 416718898
Test: atest KeyguardLockedTests
Flag: com.android.systemui.scene_container
Change-Id: I71486af2dcbb53197ba1665107e2f8dcce2a4c9f