How to access current route params from a parent layout

[Moshyfawn]

I might be thinking about it in a wrong way, but I can't seem to figure how would I get URL params in a parent route / layout.

createRouteConfig().createChildren(createRoute => [
  createRoute({
    id: "layout",
    element: <Layout />
  }).createChildren(createRoute => [
    createRoute({
      path: ":corpId"
    })
  ])
])

Imagine, I have a controlled select input that's synced with corpId param from the URL like

function Layout () {
  const params = router.getUrlParams() // an imaginary function that gets all URL params
  const { navigate } = router.useMatch("/")

  return (
    <>
      <header>
        <select value={params.corpId} onChange={event => navigate({ to: `/${event.target.value}` })}>
          <option id="00000">Corp Name #1</option>
          <option id="11111">Corp Name #2</option>
        </select>
      </header>
      <main>
        <Outlet />
      </main>
    </>
  )
}