fix: fetch devices

src/layouts/Header/Header.tsx

@@ -38,8 +38,11 @@ const Header: React.FC = () => {
 
   useEffect(() => {
     dispatch(accountSession());
-    dispatch(fetchDevices());
-  }, [dispatch]);
+
+    if (devices.length === 0) {
+      dispatch(fetchDevices());
+    }
+  }, [dispatch, devices]);
 
   const handleOutsideClick = (e: MouseEvent) => {
     if (sidebarRef.current && !sidebarRef.current.contains(e.target as Node)) {