fix: simplify recursiveRemoveEmptyAndNull (remove second parameter) and improve docs

[lpatiny]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.65%. Comparing base (781c190) to head (7a82b9d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #318      +/-   ##
==========================================
- Coverage   96.65%   96.65%   -0.01%     
==========================================
  Files         200      200              
  Lines        5889     5888       -1     
  Branches     1295     1299       +4     
==========================================
- Hits         5692     5691       -1     
  Misses        197      197              

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