feat: ignore active venv

[frostming]

Signed-off-by: Frost Ming me@frostming.com

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.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (ad2a66d) 85.21% compared to head (15016b2) 85.21%.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1782   +/-   ##
=======================================
  Coverage   85.21%   85.21%           
=======================================
  Files          95       95           
  Lines        8887     8887           
  Branches     1939     1939           
=======================================
  Hits         7573     7573           
  Misses        887      887           
  Partials      427      427           

Flag	Coverage Δ
unittests	85.02% <100.00%> (ø)

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

Impacted Files	Coverage Δ
src/pdm/project/core.py	89.15% <100.00%> (ø)

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