[Enhancement] Fix workflow Coverage failure due to testProduceAccumulator_sync()

[imzs]

Before Creating the Enhancement Request

• I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

https://github.com/apache/rocketmq/actions/workflows/coverage.yml
Most of the recent Coverage workflow tasks failed at ProduceAccumulatorTest#testProduceAccumulator_sync(), it's necessary to fix it.

https://github.com/apache/rocketmq/actions/runs/10229250411/job/28302677991
https://github.com/apache/rocketmq/actions/runs/10242303444/job/28331811381
https://github.com/apache/rocketmq/actions/runs/10250136206/job/28355136628
https://github.com/apache/rocketmq/actions/runs/10251927612/job/28361102144
https://github.com/apache/rocketmq/actions/runs/10251005385/job/28358033934
https://github.com/apache/rocketmq/actions/runs/10241255714/job/28329267351

Motivation

.

Describe the Solution You'd Like

Tests run: 3, Failures: 1, Errors: 0, Skipped: 1, Time elapsed: 0.264 sec <<< FAILURE! - in org.apache.rocketmq.client.producer.ProduceAccumulatorTest
testProduceAccumulator_sync(org.apache.rocketmq.client.producer.ProduceAccumulatorTest) Time elapsed: 0.133 sec <<< FAILURE!
org.opentest4j.AssertionFailedError:
expected: 175
but was: 37

Describe Alternatives You've Considered

.

Additional Context

No response

[ShannonDing]

could you pls submit a PR to fix it.

[imzs]

could you pls submit a PR to fix it.

Chair Ding, as I've tested, 1000ms may not be enough.

[ShannonDing]

testProduceAccumulator_sync

OK, let‘s reset it to 3s and let countDownLatch await 5s.