chore(deps): bump react and @types/react in /frontend

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

Updates `react` from 18.3.1 to 19.2.4
- [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/v19.2.4/packages/react)

Updates `@types/react` from 18.3.27 to 19.2.14
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react)

---
updated-dependencies:
- dependency-name: react
  dependency-version: 19.2.4
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/react"
  dependency-version: 19.2.14
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -59,7 +59,7 @@
     "input-otp": "^1.4.2",
     "lucide-react": "^0.574.0",
     "next-themes": "^0.4.6",
-    "react": "^18.3.1",
+    "react": "^19.2.4",
     "react-day-picker": "^8.10.1",
     "react-dom": "^18.3.1",
     "react-hook-form": "^7.61.1",
@@ -83,7 +83,7 @@
     "@testing-library/react": "^16.3.2",
     "@testing-library/user-event": "^14.6.1",
     "@types/node": "^25.3.0",
-    "@types/react": "^18.3.23",
+    "@types/react": "^19.2.14",
     "@types/react-dom": "^18.3.7",
     "@vitejs/plugin-react-swc": "^4.2.3",
     "@vitest/coverage-v8": "^4.0.18",