Open same modal at any page?

[Toshinaki]

https://github.com/remix-run/react-router/tree/dev/examples/modal
This example shows how to open an modal, while showing previous route as background.

How could you achieve this with createBrowserRouter?

https://github.com/remix-run/react-router/tree/dev/examples/modal-route-with-outlet
This is an example using createBrowserRouter, but the modal could only be opened at fixed route (the gallery route).

<Routes location={state?.backgroundLocation || location}>
  <Route path="/" element={<Layout />}>
  <Route index element={<Home />} />
  <Route path="gallery" element={<Gallery />} />
  <Route path="/img/:id" element={<ImageView />} />
  <Route path="*" element={<NoMatch />} />
  </Route>
</Routes>

How can I pass the location to createBrowserRouter? Is there any workaround?