Make sure keyguard knows about all occluded state changes

If the transition is a de-facto occlude/unocclude transition,
the transition itself will update keyguard occlusion state in
sync. However, if occlusion state changes in a different transition,
we have to notify keyguard directly or it might get stuck in
one state or another.

Bug: 266384300
Test: atest FlickerTest:OpenAppNonResizeableTest
Change-Id: Ie45ee7f99332cd083b92a9c348f0e4119757c8f1