fix: TypeError in RenvLockBuilder

[joydeep049]

Fixes #4052

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.17%. Comparing base (d6cbe40) to head (adf463a).
Report is 179 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4061      +/-   ##
==========================================
+ Coverage   75.41%   80.17%   +4.76%     
==========================================
  Files         808      822      +14     
  Lines       11983    12699     +716     
  Branches     1598     1978     +380     
==========================================
+ Hits         9037    10182    +1145     
+ Misses       2593     2089     -504     
- Partials      353      428      +75     

Flag	Coverage Δ
longtests	75.44% <ø> (+0.03%)	⬆️
win-longtests	78.35% <ø> (?)

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[terriko]

Looks good, thanks!