Use RunListener to Clear inline mocks at the end of each test class.

Inline mocks are leaking activity contexts and accumulation of these activity contexts led to OOM that resulted in test failure.

See https://github.com/mockito/mockito/issues/1614 for details on mockito caused memory leaks

This change works for both soong and gradle builds.

Bug: 378520480
Test: atest and android studio builds
Flag: TEST_ONLY
Change-Id: I4a50993621ea416a02a41dd2f9c330d1599f065c