Bump react and react-dom in /open-social-front-v2

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) and [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom). These dependencies needed to be updated together.

Updates `react` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react)

Updates `react-dom` from 18.3.1 to 19.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react-dom)

---
updated-dependencies:
- dependency-name: react
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: react-dom
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

open-social-front-v2/package.json

@@ -15,8 +15,8 @@
     "eslint": "9.17.0",
     "eslint-config-next": "15.1.2",
     "next": "15.1.2",
-    "react": "18.3.1",
-    "react-dom": "18.3.1",
+    "react": "19.0.0",
+    "react-dom": "19.0.0",
     "react-gtm-module": "^2.0.11",
     "sharp": "^0.33.5",
     "swr": "^2.2.5"