Pie Chart disappears when the value of one slice is massively larger than the others

[rstedman]

Describe the bug
When a pie chart has a couple of slices and the value of one slice is orders of magnitudes larger than the other slice to the point that there would be no room to draw the smallest slice (ex. 5 million times larger), the larger slice disappears.

To Reproduce
This can be reproduced in the demo project from this repository.

1. edit src/app/data.ts and change the single const to:

export const single: SingleSeries = [
  {
    name: 'Germany',
    value: 18,
    extra: {
      code: 'de'
    }
  },
  {
    name: 'United States',
    value: 83333334,
    extra: {
      code: 'us'
    }
  }
];

2. Run npm start, launch a browser to http://localhost:4200/ and switch to the pie chart demo.
3. See below gif for behavior

Expected behavior
The pie chart slice remains visible

Screenshots

ngx-charts version
Specify the version of ngx-charts where this bug is present

Additional context
Add any other context about the problem here.