Manual sweep from 21.6 to master: LHE filters and Powheg Wt_DR_modified
requested to merge atlas-physics/pmg/mcexperts/powheg-experts/athena:master-PowhegControl-LHEFiltersUpdate-Wt_modifiedFix into master
This MR makes a "manual" sweep from 21.6 to master, for both !51572 (merged) and !51598 (merged)