[Bug]: client-side exception when visiting useLayoutEffect page

Summary

Sometime this afternoon, the page for useLayoutEffect:

https://react.dev/reference/react/useLayoutEffect

broke with:

Application error: a client-side exception has occurred (see the browser console for more information).

Page

https://react.dev/reference/react/useLayoutEffect

Details

Console:

framework-76ad44d61c11f057.js:1 Error: File /src/App.js was defined multiple times. Each file snippet should have a unique path name
    at 145-0963f310eaedf893.js:1:299499
    at Array.reduce (<anonymous>)
    at n (145-0963f310eaedf893.js:1:298499)
    at 145-0963f310eaedf893.js:1:250798
    at lb (framework-76ad44d61c11f057.js:1:41610)
    at aY (framework-76ad44d61c11f057.js:1:61337)
    at aW (framework-76ad44d61c11f057.js:1:60197)
    at aB (framework-76ad44d61c11f057.js:1:59814)
    at ot (framework-76ad44d61c11f057.js:1:76212)
    at ua (framework-76ad44d61c11f057.js:1:111832)
aR @ framework-76ad44d61c11f057.js:1
main-6b2aa10951d4c273.js:1 Error: File /src/App.js was defined multiple times. Each file snippet should have a unique path name
    at 145-0963f310eaedf893.js:1:299499
    at Array.reduce (<anonymous>)
    at n (145-0963f310eaedf893.js:1:298499)
    at 145-0963f310eaedf893.js:1:250798
    at lb (framework-76ad44d61c11f057.js:1:41610)
    at aY (framework-76ad44d61c11f057.js:1:61337)
    at aW (framework-76ad44d61c11f057.js:1:60197)
    at aB (framework-76ad44d61c11f057.js:1:59814)
    at ot (framework-76ad44d61c11f057.js:1:76212)
    at ua (framework-76ad44d61c11f057.js:1:111832)
Q @ main-6b2aa10951d4c273.js:1
main-6b2aa10951d4c273.js:1 A client-side exception has occurred, see here for more info: https://nextjs.org/docs/messages/client-side-exception-occurred
Q @ main-6b2aa10951d4c273.js:1

Browser: Chromium 141, Firefox 143
OS: Linux

Possibly related to 8d73630aa5463c394d1b825d35b804a2a9e4324b (#8058). So, C/C'ing @poteto.

Tái hiện ngoại lệ phía máy khách trên trang tham chiếu useLayoutEffect trong Chromium hoặc Firefox và kiểm tra console của trình duyệt để tìm lỗi snippet /src/App.js bị trùng lặp. So sánh trang này với issue liên quan #8058 và xác định đường dẫn của snippet bị trùng lặp. Hoàn tất nghĩa là trang tải mà không có ngoại lệ phía máy khách và các snippet của trang có đường dẫn duy nhất.