fix markdown and jax version

src/frontend/package.json

@@ -58,13 +58,13 @@
     "react-hotkeys-hook": "^4.5.0",
     "react-icons": "^5.2.1",
     "react-laag": "^2.0.5",
-    "react-markdown": "^9.0.1",
+    "react-markdown": "^8.0.7",
     "react-pdf": "^9.0.0",
     "react-router-dom": "^6.23.1",
     "react-syntax-highlighter": "^15.5.0",
     "react18-json-view": "^0.2.8",
     "reactflow": "^11.11.3",
-    "rehype-mathjax": "^6.0.0",
+    "rehype-mathjax": "^4.0.3",
     "remark-gfm": "^4.0.0",
     "remark-math": "^6.0.0",
     "shadcn-ui": "^0.8.0",

src/frontend/src/modals/IOModal/components/chatView/chatMessage/index.tsx

@@ -200,7 +200,7 @@ export default function ChatMessage({
                                 children,
                                 ...props
                               }) => {
-                                if (children?.length) {
+                                if ((children as string)!.length) {
                                   if (children![0] === "▍") {
                                     return (
                                       <span className="form-modal-markdown-span">