React Router has built-in support since v6.12.0 by enabling the v7_startTransition feature flag:

https://reactrouter.com/en/6.22.3/guides/api-development-strategy#react-router-future-flags

<BrowserRouter future={ { v7_startTransition: true } }>
  <Routes> ... </Routes>
</BrowserRouter>

//OR

<RouterProvider
  router={ router }
  future={ { v7_startTransition: true } }
/>