fix(性能测试): 修复线程组启用禁用判断的bug

frontend/src/business/components/performance/test/components/PerformanceBasicConfig.vue

@@ -328,7 +328,7 @@ export default {
         return false;
       }
 
-      if (this.threadGroups.filter(tg => tg.attributes.enabled == 'true').length === 0) {
+      if (this.threadGroups.filter(tg => tg.enabled == 'true').length === 0) {
         this.$error(this.$t('load_test.threadgroup_at_least_one'));
         return false;
       }