fix: Use text icon, not pixmap icon in colormap and labels list

[Czaki]

No description provided.

[deprecated-napari-hub-preview-bot]

Preview page for your plugin is ready here:
https://preview.napari-hub.org/4DNucleome/PartSeg/938
Updated: 2023-04-18T22:05:42.923998

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.02 🎉

Comparison is base (44ce9df) 91.49% compared to head (357ac05) 91.52%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #938      +/-   ##
===========================================
+ Coverage    91.49%   91.52%   +0.02%     
===========================================
  Files          198      198              
  Lines        30678    30691      +13     
===========================================
+ Hits         28070    28090      +20     
+ Misses        2608     2601       -7     

Impacted Files	Coverage Δ
package/PartSeg/common_gui/colormap_creator.py	85.77% <100.00%> (ø)
package/PartSeg/common_gui/label_create.py	87.64% <100.00%> (+0.82%)	⬆️
package/tests/test_PartSeg/test_label_choose.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication