Enable EnKF-only for atmosphere

[bhuang95]

This PR works along with the following three dependent PRs to enable the EnKF-only configuration for the atmosphere within the global workflow (see detailed description NOAA-EMC/global-workflow#4345)

Dependencies:
-NOAA-EMC/global-workflow#4345
-NOAA-EMC/jcb-gdas#219
-NOAA-EMC/jcb#32

Resolve

• Enable EnKF-only for atmosphere global-workflow#4339

[bhuang95]

@CoryMartin-NOAA I updated this branch with develop. It now has issues of reading the obs distribution and localization blocks in atm_ens_obs_dist_localizations.yaml.j2
to configure LETKF yaml wtih below errors. This yaml is used on Line 23 of this LETKF YAML template. Do you know what recent changes may cause this? Looks like something is wrong with the format in this yaml?

1251 ^[[38;5;39m2026-01-09 22:53:31,307 - DEBUG    - jedi        : Writing JEDI YAML config to: /scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/TestGWSet     upRealCase/tmp/RUNDIRS/TestGW-EnKFOnly-JEDI-MEM3-T11/enkfgdas.2022010318/enkfgdasatmensanl_18/atmensanlobs.yaml^[[0m
1252 Traceback (most recent call last):
1253   File "/scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/global-workflow/scripts/exglobal_atmens_analysis_initialize.py", line 26, in <module>
1254     AtmEnsAnl.initialize()
1255   File "/scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/global-workflow/sorc/wxflow/src/wxflow/logger.py", line 252, in wrapper
1256     retval = func(*args, **kwargs)
1257              ^^^^^^^^^^^^^^^^^^^^^
1258   File "/scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/global-workflow/ush/python/pygfs/task/atmens_analysis.py", line 90, in initialize
1259     self.jedi_dict['atmensanlobs'].initialize(clean_empty_obsspaces=True)
1260   File "/scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/global-workflow/sorc/wxflow/src/wxflow/logger.py", line 252, in wrapper
1261     retval = func(*args, **kwargs)
1262              ^^^^^^^^^^^^^^^^^^^^^
1263   File "/scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/global-workflow/ush/python/pygfs/jedi/jedi.py", line 189, in initialize
1264     save_as_yaml(self.exe_config, self.jedi_config.exe_config_yaml)
1265   File "/scratch4/BMC/gsienkf/Bo.Huang/expCodes/Workflow/EnKFOnly-20251031/global-workflow/sorc/wxflow/src/wxflow/yaml_file.py", line 54, in save_as_yaml
1266     yaml.safe_dump(vanilla_yaml(data), fh,
...

1320   File "/contrib/spack-stack/spack-stack-1.9.2/envs/ue-oneapi-2024.2.1/install/oneapi/2024.2.1/py-pyyaml-6.0.2-55i3htn/lib/python3.11/site-packages/yaml/representer.py     ", line 58, in represent_data
1321     node = self.yaml_representers[None](self, data)
1322            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1323   File "/contrib/spack-stack/spack-stack-1.9.2/envs/ue-oneapi-2024.2.1/install/oneapi/2024.2.1/py-pyyaml-6.0.2-55i3htn/lib/python3.11/site-packages/yaml/representer.py     ", line 231, in represent_undefined
1324     raise RepresenterError("cannot represent an object", data)
1325 yaml.representer.RepresenterError: ('cannot represent an object', {'name': 'RoundRobin', 'halo size': '1250e3'})

[CoryMartin-NOAA]

@bhuang95 I ran into this same problem on Thursday. I don't immediately know what new change broke this, but I think the fix is this: NOAA-EMC/wxflow#65