TestSigtermOnRunner.test_process_sigterm_works_with_retries not found expected messages in logs

[Taragolis]

Body

We are disable by default this check in #28990, and enable in #38893

However it might not pass every time.

        captured = tmp_file.read_text()
        for msg in [
            "Received SIGTERM. Terminating subprocesses",
            "Task exited with return code 143",
        ]:
            # assert msg in captured.out or msg in captured.err
>           assert msg in captured
E           AssertionError: assert 'Task exited with return code 143' in '::group::Pre task execution logs\nRunning <TaskInstance: test_task_runner_sigterm_fork_non_daemon.test_on_retry_callback test-2016-01-01 [running]> on host 7132048ea935\nReceived SIGTERM. Terminating subprocesses\n'

I guess it some sort of race condition behaviour and we might kill process before it writes into the logs

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