RESTRICT AUTOMERGE Fix CTS failures in heavy weight app tests

With the fix regarding the visibility of trampoline activity, the
proc state would be evaluated once more in between the foreground
and the cached state. Since the proc state transition isn't well
defined - typically only the initial and end state matters, it'll
make sense to update the CTS test code here.

Cherry pick from master, fix flaky tests in CtsAppTestCases.

Bug: 139372994
Test: atest android.app.cts.ActivityManagerProcessStateTest
Change-Id: Ie36b959b2101ef5fef1139c7d44396f9398d178d