Draft: Fixes to test reference files for Gaudi v39r1

Follow histogram printout changes in gaudi/Gaudi!1639 (merged).

added lhcb-gaudi-head modernisation testing labels

added RTA label

mentioned in merge request Rec!4083 (merged)

• [2024-11-06 00:04] Validation started with lhcb-gaudi-head#4041

removed lhcb-gaudi-head label

closed