CAMEL-23067: provide as2 async receipt body bytes

[jonomorris]

Description

Provide access to the raw HTTP body bytes of the AS2 asynchronous receipt so that signature verification can be performed on the original bytes if required.

Raw bytes are available as the camel-as2.raw-mdn-body attribute of the CamelAs2.interchange exchange property.

Target

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[github-actions]

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[jonomorris]

@gnodet, I had a look at this one. Hope you don't mind.

[davsclaus]

There are uncommitted changes
HEAD detached at pull/21866/merge
Changes not staged for commit:
(use "git add ..." to update what will be committed)
(use "git restore ..." to discard changes in working directory)
modified: components/camel-as2/camel-as2-component/src/test/java/org/apache/camel/component/as2/AS2AsyncMDNServerManagerIT.java

[jonomorris]

Thanks for that. I see there's a PR already up for this so I've closed this one.