Fixing ISF_ProtonAFIIGeant4Selector configuration (ATLASSIM-4518)

The ParticlePDG for the `ISF_ProtonAFIIGeant4Selector` was set to 2112 (neutron) instead of 2212 (proton).
Should fix ATLASSIM-4518.

Simulation/ISF/ISF_SimulationSelectors/python/ISF_SimulationSelectorsConfig.py

@@ -133,7 +133,7 @@ def getNeutralGeant4Selector(name="ISF_NeutralGeant4Selector", **kwargs):
 
 def getProtonAFIIGeant4Selector(name="ISF_ProtonAFIIGeant4Selector", **kwargs):
     kwargs.setdefault('MaxMom'          , 750)
-    kwargs.setdefault('ParticlePDG'     , 2112)
+    kwargs.setdefault('ParticlePDG'     , 2212)
     kwargs.setdefault('Simulator'       , 'ISF_AFIIGeant4SimSvc')
     return CfgMgr.ISF__KinematicSimSelector(name, **kwargs)