Add slightly more strict test verifiction

[trask]

I started to fix #7568, but found this will help with adding the test for it, and is probably a good change independently, so sending it separately

[trask]

here's the Javadoc for this method: https://javadoc.io/static/org.assertj/assertj-core/3.24.2/org/assertj/core/api/RecursiveComparisonAssert.html#withStrictTypeChecking()

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.00%. Comparing base (f984d20) to head (63480e8).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7595      +/-   ##
============================================
- Coverage     90.01%   90.00%   -0.01%     
  Complexity     7080     7080              
============================================
  Files           803      803              
  Lines         21417    21417              
  Branches       2086     2086              
============================================
- Hits          19278    19276       -2     
- Misses         1477     1478       +1     
- Partials        662      663       +1     

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