Ensure that SUSY/Exotics particles are still passed to Geant4 when running quasi-stable particle simulation
This should fix ATLASSIM-6000, first reported in ATLMCPROD-10096, but will re-open ATLASSIM-5960, which was only "fixed" as the HIP particles were no longer being passed to Geant4.
NB Similar fixes will be required for RHadrons simulation, but we currently lack a test job for such samples.
FYI @tlari
Edited by John Derek Chapman