fix: pnpm now outputs expected error on stdout instead of stderr

[aduh95]

Fixes: #1107 (comment)

Checklist

• npm test passes
• tests are included
• documentation is changed or added
• contribution guidelines followed
  here

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.50%. Comparing base (1cbcf4c) to head (7e97fc9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1108      +/-   ##
==========================================
+ Coverage   96.36%   96.50%   +0.13%     
==========================================
  Files          29       29              
  Lines        2203     2203              
==========================================
+ Hits         2123     2126       +3     
+ Misses         80       77       -3     

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