[Task] fix flaky test

[Aias00]

Description

Task List

• https://github.com/apache/shenyu/actions/runs/21425406000/job/61693406870?pr=6280

• https://github.com/apache/shenyu/actions/runs/21423109019/job/61686480723?pr=6275

No response

[github-actions]

👋 Hello @Aias00

A new issue has been opened by @Aias00:

• Title: [Task] fix flaky test
• Link: [Task] fix flaky test #6281

Please review when you have time. Thank you! 🙏