add track-cluster match info to neutral pp
Adds track-cluster match info (back in) to neutral protoparticle.
Related MRs: Rec!3255 (merged), LHCb!3913 (merged)
Adds track-cluster match info (back in) to neutral protoparticle.
Related MRs: Rec!3255 (merged), LHCb!3913 (merged)