I think the short answer is unfortunately no.
Is it even possible to remotely try to convince maintainers of Java services to disambiguate from their interface? If so, I suggest lobbying for this change as much as possible, because your other options are not so great:
ExcludedTypes .svcmap, complexType, portType. complexType, , .
Reference.cs, , . , , , , , .
NamespaceMappings .svcmap, , , .
( , , portType), ServiceContractMappings .svcmap . , , , . ( , , , IMO, ).