chore(deps): bump react-dom and @types/react-dom in /client

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

Updates `react-dom` from 18.3.1 to 19.2.0
- [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/v19.2.0/packages/react-dom)

Updates `@types/react-dom` from 18.3.5 to 19.2.3
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-dom)

---
updated-dependencies:
- dependency-name: react-dom
  dependency-version: 19.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/react-dom"
  dependency-version: 19.2.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

client/package-lock.json

@@ -18,7 +18,7 @@
     "@svgr/webpack": "^8.1.0",
     "@types/node": "^24.3.0",
     "@types/react": "^18.3.18",
-    "@types/react-dom": "^18.3.5",
+    "@types/react-dom": "^19.2.3",
     "axios": "^1.12.0",
     "babel-jest": "^30.0.5",
     "babel-loader": "^10.0.0",
@@ -41,7 +41,7 @@
     "react": "^18.3.1",
     "react-app-polyfill": "^3.0.0",
     "react-dev-utils": "^12.0.1",
-    "react-dom": "^18.3.1",
+    "react-dom": "^19.2.0",
     "react-qr-code": "^2.0.18",
     "react-redux": "^9.2.0",
     "react-refresh": "^0.17.0",