Run on Frontier: update singularity, relocatable device code, misc fixes

[AstroBarker]

This PR incorporates changes I needed to make to run on Frontier, plus some misc fixes:

• Update singularity-eos to main
• Move energy_from_rho_P from pgen.cpp into the header file.
• The mckinnie_gammie_ryan constructor had a bug in a variable name
• eos_phoebus.cpp had an incorrect redefinition of the lambda array that the compiler interpreted as an out of bounds array access
• In the sedov pgen, the boolean to use spherical coords was loaded from input with GetOrAddReal

[Yurlungur]

Thanks for the fixes! How bad are compile times?

[AstroBarker]

Thanks for the fixes! How bad are compile times?

Not speedy but not miserable -- I've seen much worse on chicoma

[Yurlungur]

Also looks like format tests are failing :)