Change KeyguardUpdateMonitorLogger to accept nullable params

Being conservative to avoid any other breakages due to null value in non-primitive Java types.
Adds @NonNull to some Java params.

Fixes: 254860286
Test: atest KeyguardUpdateMonitorTest
Change-Id: Ie0cfc5c45c8b8384ba01409af2d2bf974d1af730
2 files changed