split windows correctly

[abstractlyZach]

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[codecov-commenter]

Codecov Report

Merging #23 (21d36e2) into main (01569ae) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #23   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines           83       112   +29     
  Branches         6        12    +6     
=========================================
+ Hits            83       112   +29     

Impacted Files	Coverage Δ
src/magic_tiler/utils/layout.py	100.00% <100.00%> (ø)

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