Describe the issue

When a pie chart with legend is shrinked a lot (down to ~20pixel in height) the Canvas functions throws an error related to rendering a negative arc radius.
This blocks the rendering and nothing but a page refresh can restore the rendering.

Expected behaviour
The chart should not throw and should rerender when the size is back to normal

Errors in browser console

Kibana Cross Issues
elastic/kibana#171408

Checklist

• The proper chart type label has been added (e.g. :xy, :partition)
• The proper feature labels have been added (e.g. :interactions, :axis)
• Every related Kibana issue is listed under Kibana Cross Issues list and the kibana cross issue tag is applied