#### PR Dependency Tree
* **PR #12880** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **Bug Fixes**
- Improved iframe preview behavior for code blocks, enabling enhanced
compatibility and resource access within previews.
- **Chores**
- Updated internal server configuration to no longer set custom
cross-origin headers during development.
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