fix: remove basename from browser history configuration

Author: JasonW404

web/apps/labelstudio/src/app/App.jsx

@@ -37,7 +37,7 @@ const queryClient = new QueryClient({
 });
 
 const browserHistory = createBrowserHistory({
-  basename: "/label-studio",
+  basename: "",
   // callback is an async way to confirm or decline going to another page in the context of routing. It accepts `true` or `false`
   getUserConfirmation: (message, callback) => {
     // `history.block` doesn't block events, so in the case of listeners,