Fix cast

[trask]

Resolves #7571

I did add a test, but it didn't really seem worth keeping, let me know if you want it.

I did ask Copilot if there were any other similar issues in the repo, and FWIW it came back with:

The repository appears to be well-designed with respect to casting practices. The issue #7571 was an isolated incident where one method was inconsistent with the established pattern.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.99%. Comparing base (20f0a3a) to head (d71ee62).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7597      +/-   ##
============================================
- Coverage     90.01%   89.99%   -0.02%     
+ Complexity     7081     7080       -1     
============================================
  Files           803      803              
  Lines         21419    21419              
  Branches       2086     2086              
============================================
- Hits          19280    19277       -3     
- Misses         1477     1479       +2     
- Partials        662      663       +1     

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