JGroupsTransport can load up an MBeanServer when statistics are enabled. We need to make sure to do this in a private method so that we can replace it as necessary in Quarkus as mbeans are not supported under substrateVM.

https://github.com/infinispan/infinispan/blob/d2db6c61a0c15e915d9140e40ffd9dd000b8cd0d/core/src/main/java/org/infinispan/remoting/transport/jgroups/JGroupsTransport.java#L534

https://github.com/infinispan/infinispan/blob/d2db6c61a0c15e915d9140e40ffd9dd000b8cd0d/core/src/main/java/org/infinispan/remoting/transport/jgroups/JGroupsTransport.java#L777