[React] Add React 19 support

[milanqtx]

When upgrading a project to React 19, symfony/ux-react causes "Invalid hook call" errors due to duplicate React instances

The package declares react@^18.0 as a peer dependency and bundles React 18 in its nested node_modules/. This means render_controller.js uses React 18 while project components use React 19

[milanqtx]

Just to confirm that it works. Thanks @Kocal