fixing a test's --allow-partial call

[atravitz]

A test was breaking because I was passing in --allow-partial="". Not sure why it's only failing now, but I'm fine writing the test in this more accurate way.

Checklist

• Added a news entry

Developers certificate of origin

• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[github-actions]

No API break detected ✅

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.69%. Comparing base (e640424) to head (d02dd79).
Report is 268 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1247      +/-   ##
==========================================
- Coverage   94.30%   92.69%   -1.62%     
==========================================
  Files         141      141              
  Lines       10781    10783       +2     
==========================================
- Hits        10167     9995     -172     
- Misses        614      788     +174     

Flag	Coverage Δ
fast-tests	92.69% <100.00%> (?)
slow-tests	?

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[mikemhenry]

LGTM -- weird it is breaking now