Using EMcluster for HI Egamma
HI Egamma was using CaloCalTopoClusters --> LCTopo
This MR fix that to use CaloTopoClusters --> EMTopo
Validation in a small sample at: https://indico.cern.ch/event/1444894/contributions/6082192/attachments/2908716/5103028/Electrons-2024-08-07.pdf
Tagging HI conveners @angerami @qhu @tbold egamma @christos @gunal
Edited by Christos Anastopoulos