feat: When the mindmap data is empty, it will not be displayed on the search page #2247 (#2414)

### What problem does this PR solve?

feat: When the mindmap data is empty, it will not be displayed on the
search page #2247
### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)

web/src/interfaces/database/knowledge.ts

   vector_similarity: number;
   highlight: string;
   positions: number[][];
+  docnm_kwd: string;
 }
 
 export interface ITestingDocument {

web/src/pages/search/index.less

   background-size: cover;
   .card {
     width: 100%;
-    cursor: pointer;
     :global(.ant-card-body) {
       padding: 14px;
     }
       font-style: normal;
     }
   }
+  .documentReference {
+    cursor: pointer;
+  }
 }
 .answerWrapper {
   margin-top: 16px;

web/src/pages/search/index.tsx

+import FileIcon from '@/components/file-icon';
 import HightLightMarkdown from '@/components/highlight-markdown';
 import { ImageWithPopover } from '@/components/image';
 import IndentedTree from '@/components/indented-tree/indented-tree';
     sendingLoading,
     relatedQuestions,
     mindMap,
-    mindMapLoading,
     searchStr,
     loading,
     isFirstRender,
 
   const isMindMapEmpty = useMemo(() => {
     return (
-      !mindMapLoading &&
-      ((Array.isArray(mindMap?.children) && mindMap.children.length === 0) ||
-        !Array.isArray(mindMap?.children))
+      (Array.isArray(mindMap?.children) && mindMap.children.length === 0) ||
+      !Array.isArray(mindMap?.children)
     );
-  }, [mindMap, mindMapLoading]);
+  }, [mindMap]);
 
   const InputSearch = (
     <Search
                         className={styles.chunks}
                         renderItem={(item) => (
                           <List.Item>
-                            <Card
-                              className={styles.card}
-                              onClick={() =>
-                                clickDocumentButton(item.doc_id, item as any)
-                              }
-                            >
+                            <Card className={styles.card}>
                               <Space>
                                 <ImageWithPopover
                                   id={item.img_id}
                                 ></ImageWithPopover>
-                                <Popover
-                                  content={
-                                    <div className={styles.popupMarkdown}>
-                                      <HightLightMarkdown>
-                                        {item.content_with_weight}
-                                      </HightLightMarkdown>
-                                    </div>
-                                  }
-                                >
-                                  <div
-                                    dangerouslySetInnerHTML={{
-                                      __html: DOMPurify.sanitize(
-                                        item.highlight,
-                                      ),
-                                    }}
-                                    className={styles.highlightContent}
-                                  ></div>
-                                </Popover>
+                                <Flex vertical gap={10}>
+                                  <Popover
+                                    content={
+                                      <div className={styles.popupMarkdown}>
+                                        <HightLightMarkdown>
+                                          {item.content_with_weight}
+                                        </HightLightMarkdown>
+                                      </div>
+                                    }
+                                  >
+                                    <div
+                                      dangerouslySetInnerHTML={{
+                                        __html: DOMPurify.sanitize(
+                                          `${item.highlight}...`,
+                                        ),
+                                      }}
+                                      className={styles.highlightContent}
+                                    ></div>
+                                  </Popover>
+                                  <Space
+                                    className={styles.documentReference}
+                                    onClick={() =>
+                                      clickDocumentButton(
+                                        item.doc_id,
+                                        item as any,
+                                      )
+                                    }
+                                  >
+                                    <FileIcon
+                                      id={item.img_id}
+                                      name={item.docnm_kwd}
+                                    ></FileIcon>
+                                    {item.docnm_kwd}
+                                  </Space>
+                                </Flex>
                               </Space>
                             </Card>
                           </List.Item>
                 <section
                   className={isMindMapEmpty ? styles.hide : styles.graph}
                 >
-                  {mindMapLoading ? (
-                    <Skeleton active />
-                  ) : (
-                    <IndentedTree
-                      data={mindMap}
-                      show
-                      style={{ width: '100%', height: '100%' }}
-                    ></IndentedTree>
-                  )}
+                  <IndentedTree
+                    data={mindMap}
+                    show
+                    style={{ width: '100%', height: '100%' }}
+                  ></IndentedTree>
                 </section>
               </Flex>
             )}