cime_developer needs to work and be regularly tested

cime_developer was the standard full CIME system test for years. I just tried running it on my machine and most of the cases in this suite do not work. The mpi-serial test failed due to some missing env modules on my machine, but the others look like they would fail for everyone:

Several tests failed with:
` ERROR: Bad STOP_N: 9 (0 coupling intervals)`

MCC failed with:
```
File "/home/jgfouca/E3SM-clean/cime/CIME/SystemTests/mcc.py", line 18, in __init__
if ninst > 1:
TypeError: '>' not supported between instances of 'NoneType' and 'int'
```

IRT failed with:
```
ERROR: (shr_pcdf_readwrite) ERROR: IRT_N2_Vmct_Ln9.f19_g16.A.mappy_gnu.20260722_121323_wsqzmj.dice_0002.r.0001-01-01-16200.nc doesnt exist
```

NCK failed with:
`ERROR: (factor_moab_comp) cannot get factors drv2mdl`

PRE tests failed with:
```
Computing partition using RCB method for 64 processors...
ERROR: (prep_ocn_merge_moab) error in getting i2x_om array
```

There will be several steps needed to fully address this situation:

- [ ] CI will need to have a "long" test action that runs cime_developer or test_sys_full_system.py for both CESM and E3SM
- [ ] We will need to fix some of the problems above for the suite to actually pass
- [ ] We may need to agree on a couple basic, small grids that both CESM and E3SM will agree to support