fix: 支持xls格式

package.json

 {
   "name": "panda-xform",
-  "version": "5.1.9",
-  "description": "5.1.9 excel表格预览优化",
+  "version": "5.2.0",
+  "description": "5.2.0 支持xls格式",
   "keywords": [
     "panda-xform"
   ],

src/core/widgets/file/FileUpload/index.js

@@ -36,6 +36,9 @@ const getFileType = (fileName) => {
     if (fileName.includes('docx')) {
       return 'docx'
     }
+    if (fileName.includes('xls')) {
+      return 'xls'
+    }
     if (fileName.includes('xlsx')) {
       return 'xlsx'
     }
@@ -124,7 +127,7 @@ const FileUpload = (props) => {
       if (!preview) return message.info('该附件禁止预览')
       let fileType = getFileType(file.name)
       if (fileType) {
-        if (fileType === 'xlsx') {
+        if (['xlsx', 'xls'].includes(fileType)) {
           downloadFile(file.sourcePath)
             .then(response => response.arrayBuffer())
             .then(buffer => {
@@ -154,7 +157,7 @@ const FileUpload = (props) => {
           <img style={{ maxWidth: '100%', maxHeight: '100%' }} src={window.location.origin + showFile.filePath}></img>
         </div>
       )
-    } else if (['xlsx'.includes(showFile.fileType)]) {
+    } else if (['xlsx', 'xls'].includes(showFile.fileType)) {
       return (
         <div>
           <Tabs>