BroadcastQueue: mark dump methods @NeverCompile.

Per docs on the annotation, dump-related code should be marked with
this annotation to save odex space.

Bug: 245771249
Test: atest FrameworksMockingServicesTests:BroadcastRecordTest
Test: atest FrameworksMockingServicesTests:BroadcastQueueTest
Test: atest FrameworksMockingServicesTests:BroadcastQueueModernImplTest
Change-Id: I30471e5c2bffda4871734a67d07dff6b127a356f