Update react monorepo to v19

Author: renovate[bot]

website/package-lock.json

@@ -21,8 +21,8 @@
     "@mdx-js/react": "^3.1.1",
     "clsx": "^2.1.1",
     "prism-react-renderer": "^2.4.1",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1"
+    "react": "^19.2.2",
+    "react-dom": "^19.2.2"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "3.9.2",