JIRA: https://jira.spring.io/browse/INT-4207
Enhance `AbstractMessageProducingHandler` to fallback for `replyChannel` to the `reply` if it is `Message`.
That lets to avoid extra `bridge` configuration afterwards to make that `reply` as `request` for the same `replyChannel` resolution.
This situation happens in case of error handling when the request message is `ErrorMessage`, typically without original headers to properly consult.
But at the same time `failedMessage` in the `MessagingException` has all required headers.
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