Feat: Support preview of HTML files #5096 (#5134)

### What problem does this PR solve?

Feat: Support preview of HTML files #5096
### Type of change


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

web/src/pages/document-viewer/index.tsx

@@ -6,6 +6,7 @@ import Docx from './docx';
 import Excel from './excel';
 import Pdf from './pdf';
 
+import { previewHtmlFile } from '@/utils/file-util';
 import styles from './index.less';
 
 // TODO: The interface returns an incorrect content-type for the SVG.
@@ -17,6 +18,11 @@ const DocumentViewer = () => {
   const prefix = currentQueryParameters.get('prefix');
   const api = `${api_host}/${prefix || 'file'}/get/${documentId}`;
 
+  if (ext === 'html' && documentId) {
+    previewHtmlFile(documentId);
+    return;
+  }
+
   return (
     <section className={styles.viewerWrapper}>
       {Images.includes(ext!) && (