plot continous column render labels

[ArneDefauw]

Fix for #443

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.00%. Comparing base (667f430) to head (a9b8c10).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #444      +/-   ##
==========================================
+ Coverage   84.92%   85.00%   +0.08%     
==========================================
  Files           8        8              
  Lines        1784     1794      +10     
==========================================
+ Hits         1515     1525      +10     
  Misses        269      269              

Files with missing lines	Coverage Δ
src/spatialdata_plot/pl/render.py	96.47% <100.00%> (+0.09%)	⬆️

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[LucaMarconato]

Thanks for the fix @ArneDefauw, works great! I'll add my review comments.

[LucaMarconato]

I added tests for the continuous case and for the categorical case (see below):

There is still one line that is not covered by tests, I will add a comment in the code. All covered!

[LucaMarconato]

I uploaded the artifacts from my usual conda env instead of the Docker env I use to simulate the GitHub Actions. I will reupload.

[LucaMarconato]

Thanks again!