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 19.2.7
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/react/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.2.7/packages/react)

Updates `@types/react` from 18.3.23 to 19.2.17
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react)

---
updated-dependencies:
- dependency-name: "@types/react"
  dependency-version: 19.2.17
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: react
  dependency-version: 19.2.7
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -32,7 +32,7 @@
     "next-themes": "^0.4.6",
     "patch-package": "^8.0.1",
     "prettier": "^3.8.4",
-    "react": "^18.3.1",
+    "react": "^19.2.7",
     "react-ace": "^14.0.1",
     "react-dom": "^18.3.1",
     "recharts": "^2.15.1",
@@ -41,7 +41,7 @@
   },
   "devDependencies": {
     "@types/node": "26.0.0",
-    "@types/react": "18.3.23",
+    "@types/react": "19.2.17",
     "@types/react-dom": "^18",
     "eslint": "^9.39.4",
     "eslint-config-next": "^15.5.12",