WIP: update Avogardro, Plank, Boltzmann and e_SI to conform to CLHEP-2.4.4.0
CLHEP has updated some physical constants in version 2.4.4.0.
https://gitlab.cern.ch/CLHEP/CLHEP/-/blob/CLHEP_2_4_4_0/ChangeLog CLHEP/CLHEP@df5be864
These are the recommended values for G4 10.7, so we need them to match when we transition to that.
I've marked this as WIP until we're ready to do so, but let's at least open the discussion.