Flag for turning on/off jet pT threshold
This MR attempts the following changes:
(1) Removal of an old flag in JetRecFlags to turn on/off the jet pT threshold during jet reconstruction as it was not used anymore in the new jet config. Instead, the flag was now migrated to JetConfigFlags in JetRecConfig such that it can be used in the new jet config.
(2) Update of the Jet/Etmiss ART tests that used this flag + fix to the MET ART test to run derivation step first to fill histograms again
(3) New feature is introduced for large-R jets (zg, rg) that was missing so far in r22. This feature required some C++ code changes as the jet clustering history is needed for these variables but not the other substructure moments. The JetConstituentFiller code will retrieve directly the constituents and transform them to PseudoJets whenever possible (any variable other than zg and rg) or get the PseudoJets from the clustering history and filter the ghosts to avoid an unnecessary long list of constituents to run over (for zg and rg). This was handled differently in R21 however this feature is currently not supported in R22.
This MR is needed for the validation discussion in ATLPHYSVAL-825