Fix boot issues with keyguard_wm_state_refactor.

a) alwaysCollect lockscreen visibility since the keyguard view is null when this is first called. This flow is very important and should always be collected anyway.
b) Don't transition to GONE on a null swipe, or you'll get stuck on "Pixel is starting" when rebooting.

Bug: 307976454
Test: atest FromLockscreenTransitionInteractorTest
Flag: ACONFIG com.android.systemui.keyguard_wm_state_refactor DEVELOPMENT
Change-Id: I769f4733fa5b08e0cb771125db86a06212a7d012