Lockscreen is invisible

The view model checks to see the transition progress to GONE; however
the transition never goes back to 0, so the transition remains at 1f in
some cases. By checking the current keyguard state, we can more
accurately understand if we are in the GONE state.

Fixes: 323438174
Test: unlock device, go to sim pin from settings, disable sim pin. Turn
AOD ON and off.
Flag: NONE

Change-Id: I1d9ca383ec1c27bc20ec3041eb85abf5026805f3