### What problem does this PR solve?
Fix: Optimize page layout and style #3221
- Added the cursor-pointer class to the logo in the Header component
- Added an icon property to the ListFilterBar in the Agents and ChatList
components
- Adjusted the Dataset page layout and set a minimum width
- Optimized the DatasetWrapper page layout and added the overflow-auto
class
- Simplified the search icon in the SearchList component
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
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Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>
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