83 bug invalid integer dtype

[cmalinmayor]

Proposed Change

Set the selected track in the TrackLabels layer when setting the selected node, so that we stop passing None through the colormap. Closes #83

Also created #84 for a remaining issue with getting a new label associated with a new track.

Checklist

Go through these things before merge. Actions should run automatically to test them, but for information on how to run locally, see CONTRIBUTING.md.

• I have added tests that prove that my feature works in various situations or tests the bugfix (if applicable).
• I have checked that the tests pass and I maintained or improved test coverage (if applicable).
• I have written docstrings and checked that they render correctly in the documentation build.

[AnniekStok]

All good! :)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 89.47%. Comparing base (b1d06cc) to head (a183c84).

Files with missing lines	Patch %	Lines
finn/track_data_views/views/layers/track_labels.py	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #85      +/-   ##
==========================================
- Coverage   89.47%   89.47%   -0.01%     
==========================================
  Files         650      650              
  Lines       60148    60149       +1     
==========================================
- Hits        53817    53816       -1     
- Misses       6331     6333       +2     

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