Account for NavigationBar in getActivityFullyVisibleRegion

Failing to do so means that tests checking the animation background color fail as they are checking that the overlayed NagivationBar is also of the background color which it won't be because of the navigation buttons.

Bug: 226554827

Test: atest android.server.wm.ActivityTransitionTests#testThemeBackgroundColorShowsDuringActivityTransition android.server.wm.ActivityTransitionTests#testCustomTransitionCanOverrideBackgroundColor android.server.wm.ActivityTransitionTests#testPendingTransitionCanOverrideBackgroundColor
Change-Id: I07895e90eadacee9b6724c237a760b9e371d4862
1 file changed