WFCORE-6824 ServiceNameFactory.resolveServiceName(UnaryServiceDescriptor) throws ISE if resolved to a NullaryServiceDescriptor

[pferraro]

https://issues.redhat.com/browse/WFCORE-6824

[wildfly-ci]

Core -> Full Integration Build 13801 outcome was FAILURE using a merge of 69b9357
Summary: Tests failed: 1 (1 new), passed: 5827, ignored: 115 Build time: 03:46:40

Failed tests

org.jboss.as.test.integration.domain.OrderedChildResourcesTestCase.testOrderedChildResources: java.lang.AssertionError: expected:<{
    "statistics-enabled" => false,
    "protocol" => {
        "RED" => undefined,
        "MPING" => undefined,
        "MERGE3" => undefined,
        "FD_SOCK2" => undefined,
        "FD_ALL3" => undefined,
        "VERIFY_SUSPECT2" => undefined,
        "pbcast.NAKACK2" => undefined,
        "UNICAST3" => undefined,
        "pbcast.STABLE" => undefined,
        "pbcast.GMS" => undefined,
        "UFC" => undefined,
        "MFC" => undefined,
        "FRAG4" => undefined
    },
    "relay" => undefined,
    "transport" => {"TCP" => undefined}
}> but was:<{
    "statistics-enabled" => false,
    "protocol" => {
        "RED" => undefined,
        "MPING" => undefined,
        "MERGE3" => undefined,
        "FD_SOCK2" => undefined,
        "FD_ALL3" => undefined,
        "VERIFY_SUSPECT2" => undefined,
        "pbcast.NAKACK2" => undefined,
        "UNICAST3" => undefined,
        "pbcast.GMS" => undefined,
        "UFC" => undefined,
        "MFC" => undefined,
        "FRAG4" => undefined
    },
    "relay" => undefined,
    "transport" => {"TCP" => undefined}
}>
java.lang.AssertionError: 
expected:<{
    "statistics-enabled" => false,
    "protocol" => {
        "RED" => undefined,
        "MPING" => undefined,
        "MERGE3" => undefined,
        "FD_SOCK2" => undefined,
        "FD_ALL3" => undefined,
        "VERIFY_SUSPECT2" => undefined,
        "pbcast.NAKACK2" => undefined,
        "UNICAST3" => undefined,
        "pbcast.STABLE" => undefined,