Fix a bug that ripple might get readded to WM and cause crash.

Bug: 184868310
Test: SystemUITests
Test: Manually
Change-Id: Idfd7d25ee60065ef3b2d9b48a35b5a8c570fc945

packages/SystemUI/src/com/android/systemui/statusbar/charging/WiredChargingRippleController.kt

@@ -103,7 +103,10 @@ class WiredChargingRippleController @Inject constructor(
     }
 
     fun startRipple() {
-        if (rippleView.rippleInProgress) {
+        if (rippleView.rippleInProgress || rippleView.parent != null) {
+            // Skip if ripple is still playing, or not playing but already added the parent
+            // (which might happen just before the animation starts or right after
+            // the animation ends.)
             return
         }
         val mWM = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager