fix: update tool mode toggle behavior in NodeToolbarComponent (#4554)

fix wrong behaviour in toogle

Co-authored-by: Nadir J <31660040+NadirJ@users.noreply.github.com>

src/frontend/src/pages/FlowPage/components/nodeToolbarComponent/index.tsx

@@ -347,7 +347,7 @@ export default function NodeToolbarComponent({
   const [toolMode, setToolMode] = useState(() => {
     // Check if tool mode is explicitly set on the node
     const hasToolModeProperty = data.node?.tool_mode;
-    if (hasToolModeProperty !== undefined) {
+    if (hasToolModeProperty) {
       return hasToolModeProperty;
     }