🍒 faces/piechart: Use GraphicalEffects.Glow for rendering outline of compact text
Apparently using style Text.Outline leads to some pretty bad text rendering. So instead use Glow from GraphicalEffects to achieve a similar effect but one that's smoother. Unfortunately this uses deprecated API because MultiEffect turns out to be completely unusable.
(cherry picked from commit 69c7ad21)
Co-authored-by: Arjen Hiemstra ahiemstra@heimr.nl