Pythia8_i updates in master from 21.6

Merged Giancarlo Panizzo requested to merge gpanizzo/athena:gpanizzo-master-update into master

Two main updates ported from 21.6:

  1. TopReconUserHook tiny changes
  2. Weights management now matching perfectly (modulo hepmc2/3 differences) 21.6 one
  • including weights order too

See AGENE-2122 and AGENE-2064

Edited by Giancarlo Panizzo

Merge request reports