[slevis-lmwg]

Motivated by CMIP7 and/or other requests.

Specific notes

Contributors other than yourself, if any:

CTSM issues resolved or otherwise addressed, if any:
Resolves #4240

Testing planned or performed, if any:

• aux_clm

Requirements before merge:

• I have followed the CTSM contribution guidelines.

• The code in this PR branch builds with no errors.
• The code in this PR branch runs with no errors: Testing documented below.
• This does not change answers, only changes field lists.
• I have reviewed relevant parts of the CLM documentation Tech Note or User's Guide to determine if anything needs to be changed or added. If it does, describe:
• Update the .rst files that list clm's field lists.

[slevis-lmwg]

• Add daily output to my ERS_D_Ld20.f10_f10_mt201.I1850Clm60Bgc.derecho_intel.20261028_174104_1rh6ic to confirm that the new field(s) work