Fix enthalpy related issues

[bigfooted]

Proposed Changes

• use reference temperature for enthalpy consistenly
• Write temperature to paraview when energy=off, being consistent with other thermodynamic quantities like viscosity.
• Fixed a bug when restarting with species.
• When energy=off, enthalpy field will still be used to compute temperature (necessary for python wrapper)
• Fixed an MPI bug where viscosity was out of sync when computing non-constant mass diffusivity
• update python wrapper case. No need to put ENERGY=ON anymore. temperature field is written to paraview

Related Work

small fixes for #2426

PR Checklist

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• I am submitting my contribution to the develop branch.
• My contribution generates no new compiler warnings (try with --warnlevel=3 when using meson).
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• I used the pre-commit hook to prevent dirty commits and used pre-commit run --all to format old commits.
• I have added a test case that demonstrates my contribution, if necessary.
• I have updated appropriate documentation (Tutorials, Docs Page, config_template.cpp), if necessary.

[pcarruscag]

Is this the only known issue after the enthalpy change? Are we in a good place to make a release?

[bigfooted]

Is this the only known issue after the enthalpy change? Are we in a good place to make a release?

I have checked some testcases in more detail, specifically the combustion testcases and they all look fine.