Fix: crash of workflow file upload (#10831)

Co-authored-by: -LAN- <laipz8200@outlook.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>

web/app/components/base/file-uploader/utils.ts

@@ -44,21 +44,24 @@ export const fileUpload: FileUpload = ({
 }
 
 export const getFileExtension = (fileName: string, fileMimetype: string, isRemote?: boolean) => {
+  let extension = ''
   if (fileMimetype)
-    return mime.getExtension(fileMimetype) || ''
+    extension = mime.getExtension(fileMimetype) || ''
 
-  if (isRemote)
-    return ''
-
-  if (fileName) {
+  if (fileName && !extension) {
     const fileNamePair = fileName.split('.')
     const fileNamePairLength = fileNamePair.length
 
     if (fileNamePairLength > 1)
-      return fileNamePair[fileNamePairLength - 1]
+      extension = fileNamePair[fileNamePairLength - 1]
+    else
+      extension = ''
   }
 
-  return ''
+  if (isRemote)
+    extension = ''
+
+  return extension
 }
 
 export const getFileAppearanceType = (fileName: string, fileMimetype: string) => {