update of lowMu menu for Ph1 migration (!69805) · Merge requests · atlas / athena · GitLab

Antonia Strubig requested to merge astruebi/athena:TM-lowMenu-r11 into 24.0 Mar 14, 2024

Adding several chains to lowMu for completing migration to Phase1.

removed legacy TAU items and unused XE thresholds from Menu_HI (not used in either HI or low Mu menu)