[charts] Ability to customize background color of pieArcLabel in PieChart

[good-jinu]

Summary

I attempted to add background colors to the labels within a pie chart, as shown in the image.

Examples

I wanted to add label's background color to this

However, I encountered significant difficulties in achieving this. example that has given me trouble

Therefore, I propose the implementation of a mechanism to directly apply background colors to these labels.

Motivation

It may be better to use pie component with easier customization option

Search keywords: pie chart, label, style, svg, slots, background color

[michelengelen]

@JCQuintas couldn't this be similar to #16121 ?

[alexfauquette]

Not exactly, this is a request ot be able to display a background on text that we could consider extending to other.

That would require to compute the text dimensions to know the size of the rectangle to apply