fix(接口测试): 修复场景环境选择问题

--bug=1009529 --user=赵勇 【接口测试】导入jmx场景，选择导入环境后调试，还是提示请选择环境 https://www.tapd.cn/55049933/s/1090637

frontend/src/business/components/api/automation/scenario/EditApiScenario.vue

@@ -1329,7 +1329,9 @@ export default {
                   this.projectEnvMap.set(this.projectId, obj.environmentId);
                 }
                 this.envGroupId = response.data.environmentGroupId;
-                this.environmentType = response.data.environmentType;
+                if (response.data.environmentType) {
+                  this.environmentType = response.data.environmentType;
+                }
                 this.currentScenario.variables = [];
                 let index = 1;
                 if (obj.variables) {