izumi_nag mpi-serial tests fail starting in cesm3_0_alpha02a where mct was removed

[ekluzek]

Brief summary of bug

The mpi-serial build fails using izumi_nag for mpi-serial tests such as:

ERS_D_Ld5_Mmpi-serial.1x1_vancouverCAN.I1PtClm50SpRs.izumi_nag.clm-CLM1PTStartDate
SMS_D_Ld1_Mmpi-serial.f45_f45_mg37.I2000Clm50SpRs.izumi_nag.clm-ptsRLA

General bug information

CESM version you are using: cesm3_0_alpha02a

Machine you are using: izumi

Have you modified the code? (If so, please point us to you changes.): No

Details of bug

Details reported in CTSM:

ESCOMP/CTSM#2654