0.23.0-beta.8

fix(core): some style issues (#13039)

#### PR Dependency Tree


* **PR #13039** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

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## Summary by CodeRabbit

* **Refactor**
* Streamlined and unified the rendering and update flow for the document
compose tool, improving clarity and responsiveness of the UI.
* Enhanced error handling and updated preview panel interactions for a
smoother user experience.

* **Style**
* Improved sidebar header layout: increased header height, added sticky
positioning, adjusted padding, and updated background color for better
visibility and usability.

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