Adding back in line removed by accident in !63033 (merged).
This prevented GenVertex objects created during the simulation step from being removed from the GenEvent by TruthResetAlg.
Should fix ATLASSIM-6579.
GitLab Runners cleaning campaign ongoing (ETA 2nd October 2023). Check https://cern.ch/otg0078219 for further information.
Adding back in line removed by accident in !63033 (merged).
This prevented GenVertex objects created during the simulation step from being removed from the GenEvent by TruthResetAlg.
Should fix ATLASSIM-6579.