The compiled frontend now targets React Router 8.3.0 (from 7.18.2), and Reflex requires Node 22.22.0 or newer as a result. Apps on the default generated setup need no `rxconfig.py` or app code changes — Reflex sets no `future.v8_*` flags, and the v8 defaults those flags now enable (middleware, pass-through requests, trailing-slash-aware data requests, the Vite Environment API build path, and `splitRouteModules`) are all compatible with the generated app. One change is required if you wrote a custom component against `react-router-dom`: that package no longer exists upstream and is no longer installed, so `library = "react-router-dom"` must become `react-router` (or `react-router/dom` for `RouterProvider`/`HydratedRouter`).
