Fixed isVisibleToUserForAutofill() so it returns true by default.

This new API was introduced during the compat app changes and it must be
implemented by views providing virtual views (like WebView). If they don't, we
need to keep the default behavior of assuming the child is visible, otherwise
we might trigger Save when the child value change and the service sets the
FLAG_SAVE_ON_ALL_VIEWS_INVISIBLE

Test: atest CtsAutoFillServiceTestCases:VirtualContainerActivityTest#testSaveNotShownWhenVirtualViewValueChanges

Fixes: 73172668

Change-Id: I80654aaffa7dd24a3b3b59e7016bd86b48fe4898
(cherry picked from commit a50d92ea68371993c38b6805cfe475e8ea03a1f8)
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 2af2467..a6766cd 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -8807,6 +8807,9 @@
     /**
      * Computes whether this virtual autofill view is visible to the user.
      *
+     * <p><b>Note: </b>By default it returns {@code true}, but views providing a virtual hierarchy
+     * view must override it.
+     *
      * @return Whether the view is visible on the screen.
      */
     public boolean isVisibleToUserForAutofill(int virtualId) {
@@ -8819,7 +8822,7 @@
                 }
             }
         }
-        return false;
+        return true;
     }
 
     /**