fix: add color palette picker to label config

[Gadha2311]

The color palette option allows you to control the visual appearance of the donut chart by selecting predefined color themes such as Default, Pastel, Bold, Earth, and Ocean. Each palette applies a distinct set of colors to the chart segments, helping improve readability and visual appeal. You can choose a palette based on your preference or the context of the data, ensuring better differentiation between slices and a more meaningful presentation of insights.

[nextchamp-saqib]

Hey, thanks for the PR!

The feature works properly, but the config layout and control doesn't look good.
Can you make the palette picker as a dropdown? something like below (this is from older v2 UI)

The inline colors can be shown in the dropdown along with the names

You can check the v2 code for reference

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.23%. Comparing base (6c63e68) to head (35c8673).
⚠️ Report is 3151 commits behind head on develop.

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Flag	BASE (6c63e68)	HEAD (35c8673)
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Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #1081       +/-   ##
============================================
- Coverage    51.16%   39.23%   -11.94%     
============================================
  Files           62       75       +13     
  Lines         3979     5589     +1610     
============================================
+ Hits          2036     2193      +157     
- Misses        1943     3396     +1453     

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[Gadha2311]

@nextchamp-saqib Thanks for the feedback!
I’ve implemented the dropdown-style palette selector for the custom case as well. For the custom case, clicking on a color preview now opens the full color palette for selection.