Ensure views are inflated before trying to animate.

Bug: 153000670
Test: manual (flash, spam touches to the nav bar - before opening
notification shade)

Change-Id: Iaa4f1515a238fbd6978d263dd22ea4d9438170a6

packages/CarSystemUI/src/com/android/systemui/car/notification/NotificationPanelViewController.java

@@ -219,6 +219,9 @@ public class NotificationPanelViewController extends OverlayViewController {
 
         mNavBarNotificationTouchListener =
                 (v, event) -> {
+                    if (!isInflated()) {
+                        return true;
+                    }
                     boolean consumed = navBarCloseNotificationGestureDetector.onTouchEvent(event);
                     if (consumed) {
                         return true;