Merge pull request #1799 from justeattakeaway/renovate/major-react-monorepo

Update react monorepo to v19 (major)

Author: slang25

docs/package-lock.json

@@ -19,8 +19,8 @@
     "@mdx-js/react": "^3.0.0",
     "clsx": "^2.0.0",
     "prism-react-renderer": "^2.4.1",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1"
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "^3.9.2",