<!-- IMPORTANT: Please use the following link to create a new issue: https://vuecomponent.github.io/issue-helper/ If your issue was not created using the app above, it will be closed immediately. --> <!-- 注意：请使用下面的链接来新建 issue： https://vuecomponent.github.io/issue-helper/ 国内镜像：http://tangjinzhou.gitee.io/issue-helper/ 不是用上面的链接创建的 issue 会被立即关闭。 --> beforeUpload 返回false，但是上传文件依然出现在上传列表中，期待不在列表中显示
