fix: #567 use modal to upload files in the knowledge base (#601)

### What problem does this PR solve?

fix:  #567 use modal to upload files in the knowledge base

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/file-manager/model.ts

@@ -85,8 +85,6 @@ const model: DvaModel<FileManagerModelState> = {
       const pathList = payload.path;
       const formData = new FormData();
       formData.append('parent_id', payload.parentId);
-      // formData.append('file', payload.file);
-      // formData.append('path', payload.path);
       fileList.forEach((file: any, index: number) => {
         formData.append('file', file);
         formData.append('path', pathList[index]);