fix: fix devcontainer issue with AGS (#6675)

<!-- Thank you for your contribution! Please review
https://microsoft.github.io/autogen/docs/Contribute before opening a
pull request. -->

fix devcontainer issue with AGS

<!-- Please add a reviewer to the assignee section when you create a PR.
If you don't have the access to it, we will shortly find a reviewer and
assign them to your PR. -->

## Why are these changes needed?

<!-- Please give a short summary of the change and the problem this
solves. -->

## Related issue number

<!-- For example: "Closes #1234" -->

Closes #5715

## Checks

- [ ] I've included any doc changes needed for
<https://microsoft.github.io/autogen/>. See
<https://github.com/microsoft/autogen/blob/main/CONTRIBUTING.md> to
build and test documentation locally.
- [ ] I've added tests (if relevant) corresponding to the changes
introduced in this PR.
- [ ] I've made sure all auto checks have passed.

Author: victordibia

python/packages/autogen-studio/frontend/gatsby-config.ts

@@ -27,7 +27,6 @@ const config: GatsbyConfig = {
   plugins: [
     "gatsby-plugin-postcss",
     "gatsby-plugin-image",
-    "gatsby-plugin-sitemap",
     {
       resolve: "gatsby-plugin-manifest",
       options: {

python/packages/autogen-studio/frontend/package.json

@@ -37,7 +37,6 @@
     "gatsby-plugin-mdx": "^5.14.0",
     "gatsby-plugin-postcss": "^6.14.0",
     "gatsby-plugin-sharp": "^5.14.0",
-    "gatsby-plugin-sitemap": "^6.14.0",
     "gatsby-source-filesystem": "^5.14.0",
     "gatsby-transformer-sharp": "^5.14.0",
     "install": "^0.13.0",