Fix Radix Test case on jdk 8~17

[AlbumenJ]

What is the purpose of the change?

https://github.com/apache/dubbo/actions/runs/11549116963/job/32142146727

Checklist

• Make sure there is a GitHub_issue field for the change.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Make sure gitHub actions can pass. Why the workflow is failing and how to fix it?