FunctorFactory - Make compatible with dd4hep

See sprucing test

https://lhcb-nightlies.web.cern.ch/nightly/lhcb-dd4hep/1124/Moore/x86_64_v2-centos7-gcc11%2Bdd4hep-opt/tests#Hlt2Conf.sprucing.test_spruce_all_lines_analytics

FunctorFactory                        FATAL in sysStart(): exception with tag=attempting to bind to algorithm which is not a condition holder is caught
FunctorFactory                        ERROR attempting to bind to algorithm which is not a condition holder 	 DistanceOfClosestApproach::bind	 StatusCode=FAILURE

@erodrigu @nskidmor @pkoppenb FYI