fix(mdx): handle double curly braces serialization in MDX payload attributes

components/MDXContent.tsx

@@ -40,9 +40,19 @@ function HeroSection(props: any) {
 }
 
 async function Block(props: any) {
-  const { type, data, children } = props;
+  const { type, children } = props;
+  let { data } = props;
   const locale = await getLocale();
 
+  // If data was passed as a JSON string (via our lib/blog.ts fix), parse it back
+  if (typeof data === 'string') {
+    try {
+      data = JSON.parse(data);
+    } catch (e) {
+      console.error('Failed to parse MDX block data:', e);
+    }
+  }
+
   // Normalize type (Payload sometimes uses blockType in data)
   const blockType = type || data?.blockType;