Run ITK+NSW in 21.9

These changes allow to run

Sim_tf.py --simulator="MC12G4" \
--inputEVNTFile=/afs/cern.ch/user/n/nkoehler/public/MuonSW/share/OUT_EVNT_50.root \
--DataRunNumber=242000 --randomSeed=6439223 --skipEvents=0 \
--geometryVersion=ATLAS-P2-ITK-22-01-00_VALIDATION \
--conditionsTag=OFLCOND-MC16-SDR-28 \
--preInclude='InDetSLHC_Example/preInclude.SLHC.py,InDetSLHC_Example/preInclude.NoTRT_NoBCM_NoDBM.py,InDetSLHC_Example/preInclude.SLHC_Setup_InclBrl_4.py,InDetSLHC_Example/preInclude.SLHC_Setup_Strip_GMX.py' \
--postInclude='PyJobTransforms/UseFrontier.py,InDetSLHC_Example/postInclude.SLHC_Setup_InclBrl_4.py,InDetSLHC_Example/postInclude.SLHC_Setup.py,BeamEffects/postInclude.CrabKissingVertexPositioner_Nominal.py' \
--preExec='from InDetSLHC_Example.SLHC_JobProperties import SLHC_Flags;SLHC_Flags.doGMX.set_Value_and_Lock(True);SLHC_Flags.LayoutOption="InclinedAlternative";from AthenaCommon.DetFlags import DetFlags;DetFlags.simulate.BField_setOn();DetFlags.Muon_setOn();' \
--postExec='from AthenaCommon import CfgGetter;CfgGetter.getService("ISF_MC15aPlusTruthService").BeamPipeTruthStrategies+=["ISF_MCTruthStrategyGroupIDHadInt_MC15"];' \
--outputHITSFile OUT_HITS.root

Adding @menke, @nstyles, @jchapman