Enable inline post on multiple atm output grids in HAFS application

[junwang-noaa]

Description

Code changes are required to enable the inline post on the multiple atm output grids in HAFS' nesting runs.

Solution

Update the inline post code on the write grid component, changes may be required on UPP code too.

Alternatives

If applicable, add a description of any alternative solutions or features you've considered.

Related to

Directly reference any issues or PRs in this or other repositories that this is related to, and describe how they are related. Example:

• PR will be made to fv3atm, upp and ufs-weather-model when the code changes are ready.