Sync with react.dev @ 2c7798d (#1348)

This PR was automatically generated.

Merge changes from
[react.dev](https://github.com/reactjs/react.dev/commits/main) at
2c7798d

The following files have conflicts and may need new translations:

* [ ]
[src/content/reference/react/components.md](/reactjs/react.dev/commits/main/src/content/reference/react/components.md)

Please fix the conflicts by pushing new commits to this pull request,
either by editing the files directly on GitHub or by checking out this
branch.

## DO NOT SQUASH MERGE THIS PULL REQUEST!

Doing so will "erase" the commits from main and cause them to show up as
conflicts the next time we merge.

Author: lumirlumir

src/content/reference/react/components.md

@@ -16,6 +16,7 @@ React는 JSX에서 사용할 수 있는 몇 가지 내장 컴포넌트를 제공
 * [`<Profiler>`](/reference/react/Profiler)를 통해 React 트리의 렌더링 성능을 프로그래밍 방식으로 측정할 수 있습니다.
 * [`<StrictMode>`](/reference/react/StrictMode)를 통해 초기에 버그를 찾는 데 도움이 되는 추가 개발 전용 검사를 사용할 수 있습니다.
 * [`<Suspense>`](/reference/react/Suspense)를 통해 자식 컴포넌트를 로딩하는 동안 Fallback을 표시할 수 있습니다.
+* [`<Activity>`](/reference/react/Activity) lets you hide and restore the UI and internal state of its children.
 
 ---
 

src/sidebarBlog.json

@@ -22,7 +22,7 @@
           "title": "React Compiler v1.0",
           "titleForHomepage": "React Compiler v1.0",
           "icon": "blog",
-          "date": "October 8, 2025",
+          "date": "October 7, 2025",
           "path": "/blog/2025/10/07/react-compiler-1"
         },
         {