ITk truth clustering update
This MR corresponds to the porting of !42616 (merged) into master. It addresses robustness issue of the truth clustering when no PU truth is available, as it is the case in standard configurations.
This MR corresponds to the porting of !42616 (merged) into master. It addresses robustness issue of the truth clustering when no PU truth is available, as it is the case in standard configurations.