TrigMinBiasMonitoring: Fixes to MBTS monitoring + new histograms

Krzysztof Ciesla requested to merge kciesla/athena:r23_fix_mbts_monitoring into 23.0

This MR fixes some bugs found in MBTS monitoring code and adds two new monitoring histograms. I also added const/constexpr where possible, removed unused methods, and run clang-format.

CC: @mdyndal @tbold @campanel

Edited by Krzysztof Ciesla

Merge request reports