fix:导入成绩接口超时提示失败，关闭转圈

src/components/drawers/ExportScore.vue

@@ -286,6 +286,10 @@ export default {
                   console.log("props.getStudent", props.getStudent);
                   clearInterval(timer);
                 }
+              }else{
+                state.addLoading = false;
+                message.destroy();
+                message.error(`文件导入超时`);
               }
             })
             .catch((err) => {