Add logging to KeyguardVisibilityHelper

This also cleans up an edge case where VISIBLE isn't always
set to the view by the callback runnable. This shouldn't be
nessecary though and shouldn't cause a user-facing change.

Bug: 262112441
Test: Manually checked the transitions
Change-Id: I9b275720ad8b7a108328197833b12efd6951371a
6 files changed