Fix: Search app AI summary ERROR And The tag set cannot be selected #9649 #9652 (#9664)

### What problem does this PR solve?
Fix: Search app AI summary ERROR And The tag set cannot be selected
#9649 #9652
- Search app AI summary ERROR: 'dict' object has no attribute 'split'
#9649
- fix The tag set cannot be selected in the knowledge base. #9652
- Added custom parameter options to the LlmSettingFieldItems component
- Adjusted the document preview height to improve page layout
adaptability

### Type of change

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

web/src/components/ui/multi-select.tsx

@@ -209,8 +209,10 @@ export const MultiSelect = React.forwardRef<
     const [isAnimating, setIsAnimating] = React.useState(false);
 
     React.useEffect(() => {
-      setSelectedValues(defaultValue);
-    }, [defaultValue]);
+      if (selectedValues === undefined) {
+        setSelectedValues(defaultValue);
+      }
+    }, [defaultValue, selectedValues]);
 
     const flatOptions = React.useMemo(() => {
       return options.flatMap((option) =>