[BUG] Flaky test io.streamnative.pulsar.handlers.amqp.ProxyTest

[gaoran10]

Describe the bug

[INFO] Running io.streamnative.pulsar.handlers.amqp.ProxyTest
Error: The operation was canceled.

The ProxyTest is stuck.

https://github.com/streamnative/ksn/actions/runs/33049291415/job/98440586033?pr=2044