Minor updates to E/gamma: R21 precision recommendations
Following MR: !54752 (merged) An issue was raised regarding the ElectronAnalysisSequence.py. This MR reverts the changes to previous recommendations.
The MR includes minor changes to EgammaCalibrationAndSmearingTool.cxx: Adding default flags for R22_precision recommendations and some extra warnings for users.
Tagging: @smanzoni @jdevivi @ludovica @turra @psommer @tadej
Edited by Ahmed Tarek