fix: 任务差额结算后 quota 和阿里视频时长优化 (#5923)

* fix: apply default ali video duration when value is non-positive

* fix: persist task quota after async settlement

service/task_billing.go

@@ -215,6 +215,9 @@ func RecalculateTaskQuota(ctx context.Context, task *model.Task, actualQuota int
 	taskAdjustTokenQuota(ctx, task, quotaDelta)
 
 	task.Quota = actualQuota
+	if err := task.UpdateQuota(); err != nil {
+		logger.LogError(ctx, fmt.Sprintf("差额结算回写 quota 失败 task %s: %s", task.TaskID, err.Error()))
+	}
 
 	var logType int
 	var logQuota int