fix: revert "NODE_ENV test affects projen behavior"

[mrgrain]

Original issue: #2947
Reverts #3294
Fixes #3322 (reply in thread)

This unintentional caused tests of custom projen projects to fail. We will need a different solution for the original issue.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (eb6b12f) 96.39% compared to head (dab40b3) 96.39%.
Report is 2 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3334   +/-   ##
=======================================
  Coverage   96.39%   96.39%           
=======================================
  Files         191      191           
  Lines       36554    36554           
  Branches     3413     3413           
=======================================
+ Hits        35236    35238    +2     
+ Misses       1318     1316    -2     

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