chg: [internal] Optimise Event::getRelatedEvents for non correlated events
chg: [internal] Optimise Event::getRelatedEvents for non correlated events

SteveClement/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP