[BUG] Transaction tests are hard to pass

[BewareMyPower]

Describe the bug
#295 ported the transaction from Kafka, but the tests are hard to pass. The only success is just in the PR. However, in https://github.com/streamnative/kop/runs/1735100343 that I've rerun for 5 times and other PRs like #338, these two tests are hard to pass.

Error:    TransactionTest.readCommittedTest:94->basicProduceAndConsumeTest:141 » ThreadTimeout
Error:    TransactionTest.readUncommittedTest:99->basicProduceAndConsumeTest:143 » ThreadTimeout

However, in my local env (MacOS), these tests could pass.

To Reproduce
Run TransactionTest.

Expected behavior
The tests should pass.

Additional context
Currently we can ignore these two tests if they failed.