Fix NNLO terms in Hathor reactions
Bug fix on missing NLO contribution when computing NNLO (from !171 (merged))
No change to tests output is needed since these reactions are used only in ALLDATA in the NLO mode.
Bug fix on missing NLO contribution when computing NNLO (from !171 (merged))
No change to tests output is needed since these reactions are used only in ALLDATA in the NLO mode.