TEgamTrig: Update supercluster calibration for electron and photon triggers, add deltaEta1PearDistortion to electrons
New tunes from the offline e/gam group are now used to calibrate online electrons and photons. These were derived using precision electron and photon objects from the mc21 pre-production, and validated in ATR-25588.
This also adds the deltaEta1PearDistortion shower-shape correction, which will be useful for future tuning campaigns.