⬇️(app-desk) downgrade @types/react-dom

Downgrade @types/react-dom to 18.2.18.
The lastest version seems to have lot of compatibility
issues with other packages:
- @openfun/cunningham-react
- @tanstack/react-query-devtools
- next

src/frontend/apps/desk/package.json

@@ -33,7 +33,7 @@
     "@types/jest": "29.5.12",
     "@types/node": "*",
     "@types/react": "18.2.56",
-    "@types/react-dom": "18.2.19",
+    "@types/react-dom": "18.2.18",
     "dotenv": "16.4.4",
     "eslint-config-people": "*",
     "fetch-mock": "9.11.0",