Do not count AOD showing changes as keyguard's

AOD status changed after keyguard was set as going away, which
reset mKeyguardGoingAway back to false and put activities to sleep.

Bug: 158640144
Test: Unlock keyguard during AOD2
Change-Id: I9335045668f90d477d19dada0185447bfa3cb2a7
1 file changed