ATLASEG-329: Timing issue - part 2, using info in electron energy calibration
Details are given in ATLASEG-329
This is the second part of the fix. The first part (MR !64467 (merged)) computed the needed information. This part uses the information in the calibration tool, to compute the MVA energy.
tagging @turra @ludovica @gunal @christos @mungo @ahabouel @smanzoni