sync MCTC and save flag for PU content with 21.2/21.6
This change set syncs additional MCTC methods from 21.2/21.6 and adds the savePileupTruthParticles
option from 21.6, which is used for the pileup samples.
cc @ewelina
This change set syncs additional MCTC methods from 21.2/21.6 and adds the savePileupTruthParticles
option from 21.6, which is used for the pileup samples.
cc @ewelina