ATR-26311 and ATR-25754 moving one dimuon and few egamma chains from dev to phys or MC

Lidija Zivkovicrequested to merge
lidiaz/athena:TM_ATR-25754_26311 into 22.0

Dimuon chain for ID is debugged and moved to Physics menu. In addition, some clean up from egamma in Dev is done with many chains moved to MC menu

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