counteract flaky test

[sappelhoff]

• https://github.com/mne-tools/mne-bids/actions/runs/15316290681/job/43090674353

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.45%. Comparing base (a1328bd) to head (8c06271).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1409   +/-   ##
=======================================
  Coverage   97.45%   97.45%           
=======================================
  Files          40       40           
  Lines        9069     9069           
=======================================
  Hits         8838     8838           
  Misses        231      231           

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[larsoner]

Thanks @sappelhoff