Herwig lhe matching fix 12_4#42906

cmsbuild merged 2 commits intocms-sw:CMSSW_12_4_Xcms-sw/cmssw:CMSSW_12_4_Xfrom

Dominic-Stafford:hw_lhe_match_fix_12_4Dominic-Stafford/cmssw:hw_lhe_match_fix_12_4Copy head branch name to clipboard