Add React Router v7 future flags to routers

src/App.tsx

@@ -42,7 +42,7 @@ const AppRoutes = () => {
 export const App = () => (
   <ThemeProvider theme={theme}>
     <CssBaseline />
-    <BrowserRouter>
+    <BrowserRouter future={{ v7_startTransition: true, v7_relativeSplatPath: true }}>
       <DBProvider>
         <AppRoutes />
       </DBProvider>