Fix flow-mapping-edge-cases

[goccy]

SSIA

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.36%. Comparing base (3b6beba) to head (1ab1d1e).

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #621      +/-   ##
==========================================
+ Coverage   77.34%   77.36%   +0.01%     
==========================================
  Files          22       22              
  Lines        7880     7885       +5     
==========================================
+ Hits         6095     6100       +5     
  Misses       1368     1368              
  Partials      417      417