Clear the staled mFocusedView when toast surface is closed.

Test: manual
Bug: 224756660
Change-Id: Iadce94f9138ee375fa9b6e3ef8fb685847312045

src/com/android/launcher3/allapps/search/DefaultSearchAdapterProvider.java

@@ -84,4 +84,9 @@ public class DefaultSearchAdapterProvider extends SearchAdapterProvider<AppLaunc
     public RecyclerView.ItemDecoration getDecorator() {
         return mDecoration;
     }
+
+    @Override
+    public void clearHighlightedItem() {
+        mHighlightedView = null;
+    }
 }