Describe the bug
The link of linked labels overlap in certain condition on Pie Charts

To Reproduce
Steps to reproduce the behavior:

1. Go to https://codesandbox.io/s/cool-chatterjee-uxfj5?file=/src/App.tsx
2. See the error shown on the screenshot

Expected behaviour
Labels should not overlap but start at different angles

Screenshots

Version (please complete the following information):

• Elastic Charts: master and before

Additional context
n/a

Errors in browser console
n/a