Use ACTION_UP instead of ACTION_DOWN in handler

We should only refresh UI on ACTION_DOWN, in this case, if nothing has
handled the touch, CentralSurfaces will close QS.

However, when dragging back gesture in QSCustomizer, this is handled
properly as a back action and QSCustomizer is closed.

Test: manual
Fixes: 183172445
Change-Id: I1d31885638a7cddcb5826723ba7562e43bb5e935

packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfaces.java

@@ -1505,7 +1505,7 @@ public class CentralSurfaces extends CoreStartable implements
         return (v, event) -> {
             mAutoHideController.checkUserAutoHide(event);
             mRemoteInputManager.checkRemoteInputOutside(event);
-            if (event.getAction() == MotionEvent.ACTION_DOWN) {
+            if (event.getAction() == MotionEvent.ACTION_UP) {
                 if (mExpandedVisible) {
                     mShadeController.animateCollapsePanels();
                 }