fix: context menu icons only appear on first open

useEffect watching [activeTool, activeTab] runs createIcons()
but contextMenu is NOT in deps. On first right-click, if
activeTool/activeTab also change (e.g. timeline click), the
effect fires and icons appear. Subsequent right-clicks don't
change activeTool/activeTab, so createIcons() never runs for
the new context menu DOM.

Fix: add contextMenu to useEffect dependency array.

app/static/js/app.jsx

@@ -7483,7 +7483,7 @@ const App = () => {
         window.lucide.createIcons();
       }
     }, 50);
-  }, [activeTool, activeTab]);
+  }, [activeTool, activeTab, contextMenu]);
   const timelineWrapperRef = useRef(null);
   const [timelineWrapperNode, setTimelineWrapperNode] = useState(null);
   const handleTimelineWrapperRef = useCallback(node => {