fix(性能测试): --bug=1007382 --user=刘瑞斌 【性能测试】执行提示参数不能为空，但是都填写了 https://www.tapd.cn/55049933/s/1060870

frontend/src/business/components/track/plan/view/comonents/load/PerformanceLoadConfig.vue

@@ -594,6 +594,9 @@ export default {
 
       for (let i = 0; i < this.threadGroups.length; i++) {
         let tg = this.threadGroups[i];
+        if (tg.enabled === 'false' ) {
+          continue;
+        }
         tg.durationHours = tg.durationHours || 0;
         tg.durationMinutes = tg.durationMinutes || 0;
         tg.durationSeconds = tg.durationSeconds || 0;