Update TruthClusterizationFactory config to work with mu=0 samples

Thomas Strebler requested to merge tstreble/athena:TruthClusterMu0Fix into 23.0

This MR is a follow up to !61225 (merged). With this previous update, the eventIndex of the sim hits has been changed from the event number to 0 for hits associated with the hard-scatter events in samples with pile-up. However for samples without pile-up, the eventIndex still corresponds to the event number. For this reason, the check deposit.first.eventIndex()!=0 can only be used for samples with pile-up. This MR updates the config of this tool accordingly.

FYI @jchapman @pagessin @lgagnon

Merge request reports