Fix race condition for mocking in radio unit test

Fixed the race condition between receiving onCurrentProgramInfoChanged
callback and update mocking isCurrentOrSystemUser method called from
onCurrentProgramInfoChanged in cancel_forNonCurrentUser for both AIDL
and HIDL HAL broadcast radio service tuner session unit test, which
causes test flakiness. Also fixed the way for mockito checking for a
method never called within in a timeout period in unit test. Safer
doReturn and doThrow Mockito syntax are also used.

Bug: 302236983
Test: atest com.android.server.broadcastradio
Change-Id: I163b7e3b020aa6df33355a3fc4dff9af76976ff8