Fix: Optimize page layout and style #3221 (#9852)

### 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)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

web/src/layouts/next-header.tsx

@@ -111,7 +111,7 @@ export function Header() {
         <img
           src={'/logo.svg'}
           alt="logo"
-          className="size-10 mr-[12]"
+          className="size-10 mr-[12] cursor-pointer"
           onClick={handleLogoClick}
         />
         <a