Update TrigVrtSecInclusiveCfg to use central vertex configs

Self-explanatory

Also removes

kwargs.setdefault("FirstMeasuredPoint", False)

as it is the default config of the tool anyway https://gitlab.cern.ch/atlas/athena/-/blob/main/Tracking/TrkVertexFitter/TrkVKalVrtFitter/src/TrkVKalVrtFitter.cxx#L44