ATR-30824: add L1_BTAG-MU3VFjJ20 and L1_BTAG-MU5VFjJ20 and HLTs using them in the Dev Menu

Marta Lanzac Berrocalrequested to merge
mlanzacb/athena:TM-22Feb2025 into 24.0

Added new L1 items in the MC menu and new HLT chain in the Dev Menu.

tagging menu coordinators: @gipezzul @shanisch tagging: @lshi

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