Syntax improvements for HepMcParticleLink constructor calls
This merge request updates the HepMcParticleLink constructor syntax in the case of links
to hard-scatter particles. Most changes are for inner tracker and muon spectrometer PileUpTools,
but fixes to xAODTruthCnv Algorithms are also included. This should help to address the issues seen in ATLASRECTS-5482.
Builds on !32480 (merged).
Edited by John Derek Chapman