Disable link rendering inside BoxEmbed content (#337)

## Description
✏️ 
Prevents links inside BoxEmbed content from being rendered as clickable
anchors.

## Screenshot (optional)
✏️ 
Before:
<img width="963" height="305" alt="image"
src="https://github.com/user-attachments/assets/fde0f353-77b9-4f02-921a-61afef7e4120"
/>


After:
<img width="1071" height="474" alt="image"
src="https://github.com/user-attachments/assets/8b74d670-95c9-42c3-9a7c-0f348dcc72a5"
/>


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Author: Aibono1225

components/embeds/boxEmbed.tsx

@@ -88,14 +88,19 @@ export function BoxEmbed(props: any) {
   const figure: string = data?.figure || "";
   const figurePrefix: any = data?.figurePrefix || "default";
 
+  const components = {
+    ...MarkdownComponentMapping,
+    a: ({ children }: any) => <span>{children}</span>,
+  };
+
   return (
     <>
       <div className={`p-4 rounded-sm my-4 ${config.containerClass}`}>
         <div className="flex items-start">
           {config.icon}
           <div className={`[&_p:last-child]:mb-0 ${config.textClass ?? ""}`}>
             <div>
-              <TinaMarkdown content={data.body} components={MarkdownComponentMapping} />
+              <TinaMarkdown content={data.body} components={components} />
             </div>
           </div>
         </div>