[seata-java] bugfix: rollback active xa connection fail #708
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Description
refer: apache/incubator-seata#5131
What happened:
当tc下发回滚时，rm的xaconnection还处于活动中时无法进行rollback，必须要先end再rollback，而XAER_RMFAIL不同的异常msg是不同的，所以需要对msg内容再做一次判断
What you expected to happen:
How to reproduce it (as minimally and precisely as possible):
Anything else we need to know?: