The renderer runtime depends on React in both the root package.json and the
packaged app manifest in app/package.json. When upgrading React, update both
manifests in the same change and keep the app manifest on exact versions to
avoid duplicate React instances in plugins. React 19 requires aligning
react-redux 9.x with redux 5.x, plus matching @types/react and
@types/react-dom versions in package.json.