Remove keep clear areas when a view detaches

If a View detaches, its keep clear areas should no longer be considered
when placing a PiP.

Bug: 209577354
Test: atest KeepClearRectsTests#testIgnoreKeepClearRectsFromDetachedViews
Change-Id: I0caa74d4bef2ee157fc3f48747788e30752d09ad

core/java/android/view/View.java

@@ -21142,6 +21142,10 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
         }
 
         notifyEnterOrExitForAutoFillIfNeeded(false);
+
+        if (info != null && !collectPreferKeepClearRects().isEmpty()) {
+            info.mViewRootImpl.updateKeepClearRectsForView(this);
+        }
     }
 
     /**