HHH-8767 Problem javassist after migrate from 4.2.7 to 4.28: cannot be cast to javassist.util.proxy.Proxy

fix org.hibernate.LazyInitializationException in test
HHH-8767 Problem javassist after migrate from 4.2.7 to 4.28: cannot be cast to javassist.util.proxy.Proxy

change javassist.util.proxy.Porxy to javassist.util.proxy.ProxyObject