web: fix nav pane on small screens

Signed-off-by: 01zulfi <85733202+01zulfi@users.noreply.github.com>

apps/web/src/app.tsx

@@ -60,6 +60,14 @@ function App() {
     useSettingStore.getState().desktopIntegrationSettings?.nativeTitlebar;
   console.timeEnd("loading app");
 
+  useEffect(() => {
+    if (isMobile) {
+      useStore.setState({
+        isNavPaneCollapsed: false
+      });
+    }
+  }, [isMobile]);
+
   return (
     <>
       {isFocused ? null : (