fix: push_or_replace Stack[List[T]]

[obatirou]

Close #699

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.23%. Comparing base (e4d884c) to head (2f3ce20).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #779   +/-   ##
=======================================
  Coverage   81.23%   81.23%           
=======================================
  Files          56       56           
  Lines       12828    12828           
=======================================
  Hits        10421    10421           
  Misses       2407     2407           

Flag	Coverage Δ
ci	81.23% <ø> (?)

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