INT-3486: Poller: prevent interruption StackTrace

JIRA: https://jira.spring.io/browse/INT-3486
    logger.debug("Poll interrupted - during stop()? : " + e.getMessage());

However, thinking about this some more, I think we should only suppress the message if `receiveMessage()` is interrupted, not `handleMessage()`, in which case, we should still thrown the `MessageHandlingException`.