23271 新建/编辑课程 上传课时，各类型文件后缀名改为.mp3、.mp4上传时应提示“格式错误无法上传，请检查文件是否能正常播放”

src/views/courseTrain/onlineCourseNew/ChapterListTea.vue

@@ -446,6 +446,7 @@
             showClose: true,
             type: 'error'
           });
+          this.uploadProgress = 0
           this.notUploadingStatus = true;
           this.uploadFail = true;
           this.uplaodLoading = false;