Draft: Charm changes for 2025 First Reoptimisations

Goals

MR collecting all modifications to HLT2 lines aiming to reduce the bandwidth/rate consumption detailed in #876 and %Reoptimised Hlt2 selections for 2025: "lossless" first pass

Contributing

If you want to contribute to this MR, please open a new MR and target the charm_2025_reopt branch and explain your goals.

All the additions need to be tested locally, including:

• Impact on the bandwidth and rate: previous and new rates and bandwidths, respectively. This must be tested using expected_2024_min_bias_hlt1_filtered_v2.
• (optional) Impact on the throughput: comparing the time with the execution of master with no extra modifications.
• (optional) Determine efficiencies: if there is simulation already available, it will be interesting to know the efficiencies so we ensure that there is no bug in the selections.

Do not rebase or force-push to this branch without the consent of the liaisons @lpica @aanelli and @cacochat, since this might lead to losses on the changes

Changes

Please add your changes following the same format of the previous MR !3741 (merged).