[WIP] Fix T, M, J options causing segmentation faults

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

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This section details on the original issue you should resolve

<issue_title>T,M,J Options produce segmentation fault errors</issue_title>
<issue_description>the compact 3D BLOCK2 tests produced the following results:
-T Rank-zero segmentation fault. Worker polarization indices appeared as **.
-M Rank-zero segmentation fault with both two and four MPI ranks.
-J MPI abort when the first adjoint solve received a right-hand side containing NaNs.

The problems were integration errors around the newer MPI/SP2 and model-I/O code, rather than a single failure in the electromagnetic solver.</issue_description>

• Closes T,M,J Options produce segmentation fault errors #87

Comments on the Issue (you are @copilot in this section)

• Fixes T,M,J Options produce segmentation fault errors #87