DRAW_EGZ : Tidy and make the Zefe more similar to the Zee

Christos Anastopoulosrequested to merge
ATLAS-EGamma/athena:DRAW_EGZ_tighten into 23.0

DRAW_EGZ try to clean up and align the selection for Zee and Zefe ask medium etc

ping @jmaurer

Edited by Christos Anastopoulos

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