next.js

c4a800fe - Upgrade React from `84af9085-20250917` to `d415fd3e-20250919` (#84003)

Upgrade React from `84af9085-20250917` to `d415fd3e-20250919` (#84003) [diff facebook/react@84af9085...d415fd3e](https://github.com/facebook/react/compare/84af9085...d415fd3e) <details> <summary>React upstream changes</summary> - https://github.com/facebook/react/pull/34536 - https://github.com/facebook/react/pull/34534 - https://github.com/facebook/react/pull/34531 - https://github.com/facebook/react/pull/34499 - https://github.com/facebook/react/pull/34523 - https://github.com/facebook/react/pull/34511 - https://github.com/facebook/react/pull/34516 - https://github.com/facebook/react/pull/34455 - https://github.com/facebook/react/pull/34488 - https://github.com/facebook/react/pull/34521 </details>