FI-2734: Fix single test run error

[AlyssaWang]

Summary

Running a single test was broken and should now be fixed. This was caused by a combination of passing the incorrect Runnable object and a rendering bug on the inputs modal.

Testing Guidance

Try running single tests and test groups and make sure there are no errors. Also try navigating from group to group while tests are running; rendered pages and the progress bar should all appear correctly.

[codecov]

Codecov Report

Attention: Patch coverage is 40.74074% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 80.11%. Comparing base (a10dfb0) to head (4942ebf).

Files	Patch %	Lines
client/src/components/TestSuite/TestSession.tsx	31.57%	11 Missing and 2 partials ⚠️
client/src/components/InputsModal/InputsModal.tsx	62.50%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #500      +/-   ##
==========================================
- Coverage   80.21%   80.11%   -0.11%     
==========================================
  Files         240      240              
  Lines       11900    11909       +9     
  Branches     1163     1166       +3     
==========================================
- Hits         9546     9541       -5     
- Misses       1694     1705      +11     
- Partials      660      663       +3     

Flag	Coverage Δ
backend	93.63% <ø> (ø)
frontend	74.07% <40.74%> (-0.15%)	⬇️

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