Fix popup notification in curved mode (#2114)

Author: keianhzo

app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/NavigationBarWidget.java

@@ -1216,7 +1216,7 @@ private void showNotification(UIButton button, int stringRes) {
         mPopUpNotification.getPlacement().translationZ = 25.0f;
         mPopUpNotification.getPlacement().density = WidgetPlacement.floatDimension(getContext(), R.dimen.tooltip_default_density);
         mPopUpNotification.setText(stringRes);
-        mPopUpNotification.setCurvedMode(false);
+        mPopUpNotification.setCurvedMode(true);
         mPopUpNotification.show(UIWidget.CLEAR_FOCUS);
 
         postDelayed(() -> hideNotification(button), NOTIFICATION_DURATION);