Update button size if title renderer is changed and ignore size is true (#2401)

Author: rh101

core/ui/UIButton.cpp

@@ -177,6 +177,7 @@ void Button::setTitleLabel(Label* label)
 
         addProtectedChild(_titleRenderer, TITLE_RENDERER_Z, -1);
         updateTitleLocation();
+        updateContentSize();
     }
 }