feat: pass original working directory as env variable to pdm scripts

[o-moe]

Pull Request Checklist

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

Implements #3179

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.31%. Comparing base (96c59f8) to head (b548104).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3279      +/-   ##
==========================================
+ Coverage   85.30%   85.31%   +0.01%     
==========================================
  Files         112      112              
  Lines       11399    11401       +2     
  Branches     2487     2487              
==========================================
+ Hits         9724     9727       +3     
+ Misses       1146     1145       -1     
  Partials      529      529              

Flag	Coverage Δ
unittests	85.11% <100.00%> (+0.01%)	⬆️

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[frostming]

Thanks