Add sanity check to ensure scheduleNextAlarmLocked() is called
regularly.

Bug: 69456806
Bug: 70623028
Test: atest tests/src/com/android/providers/calendar/CalendarSanityCheckerTest.java
Test: manual test
Change-Id: I62f0a3b34fa4d493eed1ddd9776f82e34512afe5
4 files changed