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/interfaces/request/chat.ts

@@ -7,4 +7,5 @@ export interface IFeedbackRequestBody {
 export interface IAskRequestBody {
   question: string;
   kb_ids: string[];
+  search_id?: string;
 }