[PATCH] Don't report after view detached from window.

Check window view is not null in reportKeepClearAreasChanged

Bug: 254586205
Test: CtsAutoFillServiceTestCases
Change-Id: I0db582c6f73e2a0602bfb2968e2b10536b5242d5

core/java/android/view/ViewRootImpl.java

@@ -4848,7 +4848,7 @@ public final class ViewRootImpl implements ViewParent,
     }
 
     void reportKeepClearAreasChanged() {
-        if (!mHasPendingKeepClearAreaChange) {
+        if (!mHasPendingKeepClearAreaChange || mView == null) {
             return;
         }
         mHasPendingKeepClearAreaChange = false;