BroadcastQueue: periodic internal health check.

Devices might end up in an unexpected state, so periodically run
an internal health check dump the current state if any expected
constraints are violated.

Bug: 245771249
Test: atest FrameworksMockingServicesTests:BroadcastRecordTest
Test: atest FrameworksMockingServicesTests:BroadcastQueueTest
Test: atest FrameworksMockingServicesTests:BroadcastQueueModernImplTest
Change-Id: I1870a952c12f4a030243405c52b29e0618055d55