feat(pipelines): list commit logs 使用直接订阅。

替代了先查询再订阅，确保数据不丢失。

src/pipelines/pipelines.service.spec.ts

@@ -59,7 +59,7 @@ describe('PipelinesService', () => {
       const add = jest.spyOn(queue, 'add');
       await expect(
         service.listLogsForPipeline('test-pipeline'),
-      ).resolves.toEqual(1);
+      ).resolves.toEqual({ id: 1 });
       expect(add).toBeCalledWith({
         project: pipeline.project,
         branch: pipeline.branch,