Do not allow Tasks to influence orientation under some conditions.

When all AppWindowTokens belonging to a Task are closing, it should
not be considered for orientation. Likewise, if a task is moving to
the bottom, it should also not be considered.

Change-Id: Ie387457c413d5360afbb0ac8edb112f81feab81b
Fixes: 35699615
Test: bit FrameworksServicesTests:com.android.server.wm.TaskStackTests#testClosingAppDifferentStackOrientation
Test: bit FrameworksServicesTests:com.android.server.wm.TaskStackTests#testMoveTaskToBackDifferentStackOrientation
Test: cts/hostsidetests/services/activityandwindowmanager/util/run-test CtsServicesHostTestCases android.server.cts.ActivityManagerAppConfigurationTests#testTaskCloseRestoreOrientation
Test: cts/hostsidetests/services/activityandwindowmanager/util/run-test CtsServicesHostTestCases android.server.cts.ActivityManagerAppConfigurationTests#testTaskMoveToBackOrientation