[Bug] [dolphinscheduler-worker] Unable to stop tasks in Seatunnel cluster

### Search before asking

- [X] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar issues.

### What happened

我通过DS定时调度，使用Cluster模式启动Seatunnel任务。
然后通过DS页面中“工作流实例”->“操作”->“停止”按钮停止这个Seatunnel任务。

结果是，杀死了SeatunnelClient。
但事实上SeatunnelClient在Cluster模式下，只是讲任务提交到SeatunnelServer，真正执行任务在SeatunnelServer。
所以，杀死SeatunnelClient，只在Local模式下有用。
在Cluster模式下，需要调用Seatunnel提供的rest api -> "/hazelcast/rest/maps/stop-job"。

我本想自己实现在结束Seatunnel任务的同时调用这个接口，但我没有看到dolphinscheduler-task-seatunnel或dolphinscheduler-worker支持这样的扩展。

### What you expected to happen

pass

### How to reproduce

pass

### Anything else

pass

### Version

dev

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

Start by inspecting the dolphinscheduler-task-seatunnel and dolphinscheduler-worker modules, especially the task stop flow. Compare how stopping a Local-mode task differs from Cluster mode, then review the Seatunnel REST endpoint /hazelcast/rest/maps/stop-job. Done means a Cluster-mode stop reaches the SeatunnelServer while Local-mode behavior remains usable.

Written by the indexing model from the issue text.