Lookup of UserTransaction should not be allowed in CMT beans

EJB spec 8.3.4 Enterprise Beans Using Container-Managed Transaction Demarcation:

The enterprise bean’s business methods, message listener methods, business method interceptor meth- ods, lifecycle callback interceptor methods, or timeout callback methods must not attempt to obtain or use the javax.transaction.UserTransaction interface.

Currently lookup("java:comp/UserTransaction") returns an instance of org.jboss.tm.usertx.client.ServerVMClientUserTransaction.

Similar to AS7-5331