Update react monorepo to v19

Author: renovate[bot]

package.json

@@ -22,8 +22,8 @@
     "@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": "19.2.3",
+    "react-dom": "19.2.3"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "3.9.2",