Manual sweep of !41587 from 21.0 to 21.6: Move G4particle_whitelist.txt to TruthUtils so that it is available in AthSimulation
Move G4particle_whitelist.txt to TruthUtils so that it is available in AthSimulation
See merge request !41587 (merged)
Swept to 21.6 to keep things consistent, but it's up to @ewelina whether or not we want this change in 21.6.