fix(测试跟踪): 测试计划个别接口用例执行一直转圈

--bug=1020841 --user=陈建星 【测试跟踪】github#20605，测试计划中执行某个case，一直在转圈 https://www.tapd.cn/55049933/s/1316462

api-test/frontend/src/business/definition/components/response/RequestResultTail.vue

@@ -65,6 +65,9 @@ export default {
             } else {
               this.$EventBus.$emit('API_TEST_ERROR', this.reportId);
             }
+          } else {
+            this.loading = true;
+            this.socketSync();
           }
         });
       }

test-track/frontend/src/business/plan/view/comonents/api/TestPlanApiCaseList.vue

@@ -511,13 +511,11 @@ export default {
     singleRun(row) {
       let reportId = getUUID().substring(0, 8);
       this.rowLoading = row.id;
-      run(row.id, reportId)
-        .then(() => {
       this.runningReport.add(reportId);
+      // 这里先打开报告，建立 websock
+      // 否则可能执行完了才建立 websock，拿不到结果
       this.$refs.apiCaseResult.open(reportId);
-        },error =>{
-          this.rowLoading = "";
-        });
+      run(row.id, reportId);
     },
     handleTestEnd(reportId) {
       if (this.runningReport.has(reportId)) {