GLC_NCPL needs to be increased in DAE_C2_D_Lh12.f10_f10_mg37.I2000Clm50BgcCrop.derecho_intel.clm-DA_multidrv

DAE_C2_D_Lh12.f10_f10_mg37.I2000Clm50BgcCrop.derecho_intel.clm-DA_multidrv is failing the second case's run with:

```
20260905 114401.680 ERROR PET000 src/addon/NUOPC/src/NUOPC_Base.F90:976 Invalid argument - setClock timeStep=43200s is not a divisor of runDuration=21600s
```

I think the problem is that GLC_NCPL sets GLC coupling to be twice a day (every 12 hours - i.e., every 43200s), but the case2 run does 2 DA cycles of 6 hours each.

A suggested fix is changing GLC_NCPL to 4 instead of 2. I haven't tried this.