RFE issue EAP7-264 fixing long term problem of JBTM-860.

This fix has got limitation that works well just with JDBC resources and with in-VM JMS connections - which is now ActiveMQ and HornetQ. Currently does not work fully with AMQ6 see JBEAP-3003.

This documentation jira requests document limitation for AMQ6 RAR. As it's third party messaging such does not implement wrapper interface from Narayana API which is needed for this (see description under EAP7-264).
Please document that use case {{Transaction Manager sends commit to all XA transaction participants and crashes while waiting for reply. After restart it will go on
indefinitely logging warnings until records of the committed transaction
are removed "manually" from its object store.}} is not fixed for AMQ6 as RAR does not implement Narayana API.