Reduce version of react-markdown to support inline code blocks

Author: Konard

example/package.json

@@ -19,7 +19,7 @@
     "react": "18.3.1",
     "react-deep-tree": "linksplatform/react-deep-tree#master",
     "react-dom": "18.3.1",
-    "react-markdown": "^9.0.1"
+    "react-markdown": "8"
   },
   "devDependencies": {
     "@types/node": "^22.7.5",