Fix invalid outline after widget resizing

Fix: 283778989
Test: Manual
Change-Id: I8821658a1db333159684562ba79f30fd92291fad

src/com/android/launcher3/widget/BaseLauncherAppWidgetHostView.java

@@ -105,6 +105,7 @@ public abstract class BaseLauncherAppWidgetHostView extends NavigableAppWidgetHo
                 mEnforcedRectangle);
         setOutlineProvider(mCornerRadiusEnforcementOutline);
         setClipToOutline(true);
+        invalidateOutline();
     }
 
     /** Returns the corner radius currently enforced, in pixels. */