[Suggestion]: Feature React 19.3 codemods across docs, blog, and changelog

Summary

Let's feature the React 19.3 recipe and individual codemods in the relevant docs so users and agents can easily discover and adopt them when needed.

Page

https://react.dev/blog/2026/09/09/react-19-3
https://github.com/react/react/blob/main/CHANGELOG.md

Details

This repo contains the source for the official react 19 codemods, as well as the newly created 19.3 recipe:
https://github.com/codemod/react-codemod/tree/main/codemods/react-19-3-migration-recipe

users can simply run:
npx codemod react-19-3-migration-recipe

Or run the codemods in the recipe individually:

npx codemod react-19-3-unprefix-stable-apis
npx codemod react-19-3-use-browser
npx codemod react-19-remove-context-provider
npx codemod react-19-3-fragment-ref-wrappers

Inizia dalla pagina del blog su React 19.3 e da CHANGELOG.md collegati nell’issue, quindi esamina la documentazione esistente dei codemod di React 19. Documenta la ricetta di migrazione alla 19.3 e i relativi codemod nei documenti, negli articoli del blog e nelle voci del changelog pertinenti; il lavoro è completato quando gli utenti possono trovare la ricetta e ogni comando elencato.