Don't show caption menu for things in TaskView / bubbles

Test: manual - enable desktop windowing
             - get a bubble and expand it, verify there isn't an
               extra handle at the top of the view
Bug: 287090311
Change-Id: I0b382cd6ec529ad2264aec1b633b99817c6a7b18

libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/DesktopModeWindowDecorViewModel.java

@@ -799,6 +799,7 @@ public class DesktopModeWindowDecorViewModel implements WindowDecorViewModel {
         return DesktopModeStatus.isProto2Enabled()
                 && taskInfo.getWindowingMode() != WINDOWING_MODE_PINNED
                 && taskInfo.getActivityType() == ACTIVITY_TYPE_STANDARD
+                && !taskInfo.configuration.windowConfiguration.isAlwaysOnTop()
                 && mDisplayController.getDisplayContext(taskInfo.displayId)
                 .getResources().getConfiguration().smallestScreenWidthDp >= 600;
     }