Use BinderDeathDispatcher for alarm listeners

This ensures only one JNI strong reference for the death recipient when
the same binder is used for multiple linkToDeath calls.

Test: atest CtsAlarmManagerTestCases
atest FrameworksCoreTests:BinderDeathDispatcherTest
atest FrameworksMockingServicesTests:com.android.server.alarm

Fixes: 162961981
Bug: 182971683
Change-Id: Ieea2d8f4e495a4c4687378db9d0b8c6949a0406a