raylib ui: only process mouse events when enabled (#35948)

system/ui/widgets/__init__.py

@@ -82,6 +82,7 @@ class Widget(abc.ABC):
     ret = self._render(self._rect)
 
     # Keep track of whether mouse down started within the widget's rectangle
+    if self.enabled:
       for mouse_event in gui_app.mouse_events:
         if not self._multi_touch and mouse_event.slot != 0:
           continue