Not able to style target in bullet chart to have a Rounded Corner even while using the plugin

[cgandhamQB]

Description of the issue

Target bar should have a rounded edge. May be add a borderRadius or make it able to use the rounded corner plugin.

Live demo with steps to reproduce

https://jsfiddle.net/chandanasri/zwrqspej/2/

[KacperMadej]

Bullet series provides no easy access to the target drawing function properties and shape arguments for the target graphic are not stored (only used for the shape calculations), so this is why the below PoC has a lot of code that overwrites the original function used for drawing the target.

PoC: https://jsfiddle.net/BlackLabel/74nwhg16/