build(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 19.1.0
- [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/v19.1.0/packages/react)

Updates `@types/react` from 18.3.23 to 19.1.6
- [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: 19.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/react"
  dependency-version: 19.1.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -26,7 +26,7 @@
     "i18next-browser-languagedetector": "^8.0.2",
     "mermaid": "^11.6.0",
     "prop-types": "^15.8.1",
-    "react": "^18.2.0",
+    "react": "^19.1.0",
     "react-chartjs-2": "^5.3.0",
     "react-copy-to-clipboard": "^5.1.0",
     "react-dom": "^18.3.1",
@@ -44,7 +44,7 @@
   },
   "devDependencies": {
     "@types/mermaid": "^9.1.0",
-    "@types/react": "^18.0.27",
+    "@types/react": "^19.1.8",
     "@types/react-dom": "^18.3.0",
     "@types/react-helmet": "^6.1.11",
     "@types/react-syntax-highlighter": "^15.5.13",