Clear mTouchedView when a snap-back animation ends

Bug: 259529672
Test: dumpsysui SwipeHelper
Change-Id: Iff38e3721a4abfa613974e6df32cb178c3a73fb9

packages/SystemUI/src/com/android/systemui/SwipeHelper.java

@@ -548,6 +548,10 @@ public class SwipeHelper implements Gefingerpoken, Dumpable {
             if (!cancelled) {
                 updateSwipeProgressFromOffset(animView, canBeDismissed);
                 resetSwipeOfView(animView);
+                // Clear the snapped view after success, assuming it's not being swiped now
+                if (animView == mTouchedView && !mIsSwiping) {
+                    mTouchedView = null;
+                }
             }
             onChildSnappedBack(animView, targetLeft);
         });