Further revisions on visual elements marked in
fixes#29921
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## Summary by CodeRabbit
- **New Features**
- Introduced `SegmentAddHeader` and `SegmentedHeader` components for
improved navigation and functionality in the editor pane.
- **Enhancements**
- Updated the editor pane layout and styling for better visual appeal
and usability.
- Enhanced button functionality to streamline user interactions within
the editor.
- **Style Updates**
- Adjusted various styling properties across components, including
padding, gap, and flex attributes for a more cohesive design language.
- **Bug Fixes**
- Fixed button logic and event handling functions to ensure smoother
user experience.
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