[Layout] Modify the Entities to be in a collapsible submenu

- small fix for window pathname

pkgs/ui/src/components/sidebar/index.tsx

@@ -83,7 +83,7 @@ interface SidebarProps {
 
 export function Sidebar(props: SidebarProps) {
     const {show, onClose} = props;
-    const [activeMenuItem, setActiveMenuItem] = React.useState(window.location.pathname);
+    const [activeMenuItem, setActiveMenuItem] = React.useState(typeof window !== "undefined" ? window.location.pathname : "");
     const [collapseMenuOpen, setCollapseMenuOpen] = React.useState(true);
 
     const handleCollapseClick = () => {