Check for invalid material when importing from CSV

[pkrull-ansys]

This PR:

• Checks for an invalid material name in an imported CSV
• Adds missing column names to the error message when imported CSV is invalid

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.36%. Comparing base (8774b4d) to head (321e7ef). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #537 +/- ## ======================================= Coverage 97.36% 97.36% ======================================= Files 34 34 Lines 3415 3418 +3 ======================================= + Hits 3325 3328 +3 Misses 90 90 ```

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