feat(search): Optimized search functionality and user interface #3221 (#9535)

### What problem does this PR solve?

feat(search): Optimized search functionality and user interface #3221
### Type of change
- Added similarity threshold adjustment function
- Optimized mind map display logic
- Adjusted search settings interface layout
- Fixed related search and document viewing functions
- Optimized time display and node selection logic

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/next-search/mindmap-drawer.tsx

@@ -27,7 +27,7 @@ const MindMapDrawer = ({ data, hideModal, visible, loading }: IProps) => {
         />
       </div>
       {loading && (
-        <div className="absolute top-48">
+        <div className=" rounded-lg p-4 w-full h-full">
           <Progress value={percent} className="h-1 flex-1 min-w-10" />
         </div>
       )}