fix(接口测试): 修复选中创建断言步骤添加MQTT等三方组件步骤-未添加到选中步骤后面

【【接口测试】场景断言-选中后添加MQTT等组件步骤-未添加到场景断言后面】https://www.tapd.cn/55049933/bugtrace/bugs/view?bug_id=1155049933001013566

frontend/src/business/components/api/automation/scenario/menu/Menu.js

@@ -201,7 +201,7 @@ export function setComponent(type, _this, plugin) {
       _this.$refs.scenarioRelevance.open();
       break;
     default:
-      _this.scenarioDefinition.push(new PluginController({type: plugin.jmeterClazz, stepName: plugin.name, pluginId: plugin.scriptId}));
+      setNode(_this,new PluginController({type: plugin.jmeterClazz, stepName: plugin.name, pluginId: plugin.scriptId}));
       break;
   }
   if (_this.selectedNode) {