fix interception routes with rewrites (#59094)
### What?
When using interception routes & rewrites, on first interception the
router will properly handle the request. But when using the back button
and attempting another interception, it won't work
### Why?
Intercepting routes rely on the accuracy of `nextUrl` -- but when
`ACTION_RESTORE` is dispatched (in the `popstate` event), `nextUrl` is
restored from `url.pathname` rather than the flight router state.
### How?
This uses the `extractPathFromFlightRouterState` util which will
properly handle setting `nextUrl`. This util is also used when creating
the initial router state.
Closes NEXT-1747
Fixes #56072
