fix(性能测试): 修复查看报告详情全部取消后loading不消失的问题

--bug=1014891 --user=刘瑞斌 【性能测试】github #15776，性能测试报告，测试详情全部取消后折线图一直转圈 https://www.tapd.cn/55049933/s/1229004

Closes #15776

frontend/src/business/components/performance/report/components/TestDetails.vue

@@ -241,6 +241,7 @@
         <el-row>
           <el-col :offset="2" :span="20">
             <el-table
+              v-if="refresh"
               :data="tableData"
               stripe
               border
@@ -506,6 +507,12 @@ export default {
     },
     handleGetTotalChart(res) {
       res = res.filter(v => !!v);
+      if (res.length === 0) {
+        this.refresh = false;
+        this.result.loading = false;
+      } else {
+        this.refresh = true;
+      }
       for (let i = 0; i < res.length; i++) {
         if (i === 0) {
           this.baseOption.yAxis.push({