Fix for testDisplayEvents CTS Launching another activity instead of home to bring other activity in cache state. In car Ui Portrait, home is always visible, so launching the home activity doesn't have intended behavior in bringing other activities to cache state. Bug: 300049979 Test: atest CtsDisplayTestCases:android.display.cts.DisplayEventTest#testDisplayEvents Change-Id: I0cb11d9f111972708f7d925ddf3e49315c2ad617