Remove direct physcons module dependencies from C3

[scrasmussen]

Description:

• Removes direct dependencies on the global physcons module from CCPP physics schemes.
• Supplies physical constants through explicit CCPP arguments, with standard names, units, and metadata.
• Makes each scheme’s required constants visible in its interface instead of relying on hidden module state.
• Improves portability and reuse of physics schemes in different host models and configurations.
• Simplifies dependency tracking, testing, and maintenance by centralizing ownership of physical constants in the host/CCPP framework.

Related PRs

• UFSWM - Remove direct physcons module dependencies from CCPP-Physics ufs-weather-model#3323
  • UFSATM - Remove direct physcons module dependencies from CCPP-Physics NOAA-EMC/ufsatm#1131
    • ccpp-physics - Remove direct physcons module dependencies from CCPP-Physics NCAR/ccpp-physics#1235
      • c3 - Remove direct physcons module dependencies from C3 #4
      • MYNN-SFC - Remove direct physcons module dependencies from MYNN NCAR/MYNN-SFC#32

[grantfirl]

I'm guessing that keeping the physcons import statement was an oversight since the actual constants data was already being passed in via the argument list.

[lisa-bengtsson]

I'm guessing that keeping the physcons import statement was an oversight since the actual constants data was already being passed in via the argument list.

yes, my fault. Thanks for cleaning it up @scrasmussen !