Feat: Show formulas when answering, show reference labels in style, remove cursor flashing effect. #5173 (#5174)

### What problem does this PR solve?

Feat: Show formulas when answering, show reference labels in style,
remove cursor flashing effect. #5173

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/chat/markdown-content/index.less

@@ -6,6 +6,10 @@
     margin-bottom: 10px;
     font-size: 12px;
   }
+  :global(blockquote) {
+    padding-left: 10px;
+    border-left: 4px solid #ccc;
+  }
 }
 
 .referencePopoverWrapper {

web/src/pages/chat/markdown-content/index.tsx

@@ -27,7 +27,7 @@ import { pipe } from 'lodash/fp';
 import styles from './index.less';
 
 const reg = /(~{2}\d+={2})/g;
-const curReg = /(~{2}\d+\${2})/g;
+// const curReg = /(~{2}\d+\${2})/g;
 
 const getChunkIndex = (match: string) => Number(match.slice(2, -2));
 // TODO: The display of the table is inconsistent with the display previously placed in the MessageItem.
@@ -35,7 +35,6 @@ const MarkdownContent = ({
   reference,
   clickDocumentButton,
   content,
-  loading,
 }: {
   content: string;
   loading: boolean;
@@ -51,10 +50,8 @@ const MarkdownContent = ({
       text = t('chat.searching');
     }
     const nextText = replaceTextByOldReg(text);
-    return loading
-      ? nextText?.concat('~~2$$') // TODO: The style of thinking also needs to be displayed when outputting
-      : pipe(replaceThinkToSection, preprocessLaTeX)(nextText);
-  }, [content, loading, t]);
+    return pipe(replaceThinkToSection, preprocessLaTeX)(nextText);
+  }, [content, t]);
 
   useEffect(() => {
     const docAggs = reference?.doc_aggs;
@@ -173,9 +170,9 @@ const MarkdownContent = ({
         );
       });
 
-      replacedText = reactStringReplace(replacedText, curReg, (match, i) => (
-        <span className={styles.cursor} key={i}></span>
-      ));
+      // replacedText = reactStringReplace(replacedText, curReg, (match, i) => (
+      //   <span className={styles.cursor} key={i}></span>
+      // ));
 
       return replacedText;
     },