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

    Check window view is not null in reportKeepClearAreasChanged

Bug: 254586205
Test: CtsAutoFillServiceTestCases
Change-Id: I0db582c6f73e2a0602bfb2968e2b10536b5242d5
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index e46e44b..2bb9848 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -4848,7 +4848,7 @@
     }
 
     void reportKeepClearAreasChanged() {
-        if (!mHasPendingKeepClearAreaChange) {
+        if (!mHasPendingKeepClearAreaChange || mView == null) {
             return;
         }
         mHasPendingKeepClearAreaChange = false;