✨ feat(file): 支持多文件上传功能

- 将上传组件的multiple属性从false改为true，允许同时选择并上传多个文件

packages/file-management-ui-mt/src/components/FileManagement.tsx

@@ -398,7 +398,7 @@ export const FileManagement: React.FC<FileManagementProps> = ({
             <MinioUploader
               uploadPath="/files"
               maxSize={500}
-              multiple={false}
+              multiple={true}
               onUploadSuccess={() => {
                 handleUploadSuccess();
                 setIsUploadModalOpen(false);