fix(MCP): redirect to new URL (#15142)

At somepoint we changed MCP docs routes, so we had a 404 on a page.
Added a redirect to fix this, from `/product/insights/mcp/` to
`/product/insights/ai/mcp/`.

Author: betegon

redirects.js

@@ -1242,6 +1242,10 @@ const userDocsRedirects = [
     source: '/platforms/dotnet/guides/google-cloud-functions/profiling/:path*',
     destination: '/platforms/dotnet/profiling/',
   },
+  {
+    source: '/product/insights/mcp/',
+    destination: '/product/insights/ai/mcp/',
+  },
 ];
 
 /**