Fill the Greenland snow hole: update ICs, remove old CRUJRA option

For now, let's just have Cecile use user_nl_clm mods for initial conditions.
The PR can be merged with beta_09

Definition of Done:
- [x] generate files
- [x] ne30 IC file #3680
- [x] Create CDEPS PR https://github.com/ESCOMP/CDEPS/pull/385 with the new datasets (see https://github.com/ESCOMP/CDEPS/issues/382)
- [x] rimport new datm files updated to CDF5 (`/glade/derecho/scratch/wwieder/TRENDY2024_greenland2/inputs/three_stream`)
- [x] namelist defaults
- [x] Open CTSM PR to update the CDEPS submodule with the updated CRUJRA2024 data
- [x] Didn't include the CDEPS CMIP7 CO2 PR in this ctsm-side update
- [x] Update subset_data default_data_*.cfg files accordingly
- [x] Point to CRUJRA2024b for CRUJRA2024 compsets
- [ ] Update more IC's with the new data
- [x] add script to tools/contrib? `https://github.com/wwieder/ctsm_py/blob/master/notebooks/CRUJRA_greenland.ipynb`. Should likely do this for the Antarctic fix to CRU-JRA too.
- [ ] Remove the old CRUJRA2024 option in CDEPS
- [ ] Update to the CDEPS tag with the removal