Fix for combined muon reconstruction in cosmics

For some reason cherry-picking MR 1743 directly didn't work so I am doing it manually.
Please see that MR for more details: this should not be particularly important for the trigger, but it keeps the online and offline codes consistent.
As it has been in 21.0 for a couple of weeks, this change has already passed RTT tests equivalent to trigtest.pl.

Reconstruction/MuonIdentification/MuonCombinedRecExample/python/MuonCombinedTools.py

@@ -59,6 +59,8 @@ def MuonCombinedParticleCreator(name="MuonCombinedParticleCreator",**kwargs):
     kwargs.setdefault("TrackSummaryTool", ToolSvc.CombinedMuonTrackSummary ) #getPublicTool("CombinedMuonTrackSummary") )
     kwargs.setdefault("KeepAllPerigee",True )
     kwargs.setdefault("UseMuonSummaryTool",True )
+    if beamFlags.beamType() == 'cosmics':
+        kwargs.setdefault("PerigeeExpression","Origin")
     return CfgMgr.Trk__TrackParticleCreatorTool(name,**kwargs)
 
 def MuonCaloParticleCreator(name="MuonCaloParticleCreator",**kwargs):