Revert "perf(shapes): vectorize datashader polygon scaling"

[timtreis]

Reverts #738

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.29%. Comparing base (edf3f76) to head (14d7307).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #739   +/-   ##
=======================================
  Coverage   79.29%   79.29%           
=======================================
  Files          17       17           
  Lines        4599     4599           
  Branches     1030     1030           
=======================================
  Hits         3647     3647           
  Misses        602      602           
  Partials      350      350           

Files with missing lines	Coverage Δ
src/spatialdata_plot/pl/render.py	89.63% <100.00%> (ø)

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