Verify that setReportedProcState() has been called.

Currently, we check the reportedProcState directly but it
could have been updated since the broadcast delivery has
been finished.

Bug: 314181833
Test: atest services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
Change-Id: I8262ace3d004ffeb5fafca9de2764821cf0309c9