Sorting doesn't work if data for both axis is numeric

[kazimirchuk]

Is there an existing issue for this?

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Victory version

Latest

Code Sandbox link

https://codesandbox.io/s/victory-starter-forked-l73jld?file=/src/App.tsx

Bug report

Sorting doesn't work if data for both axis is numeric.

Steps to reproduce

1. Go to a "Getting Started" page of Victory
2. Go to Step #3 "Add your data"
3. Confirm that chart data that you see follows this `interface { earnings: number; quarter: number }`
4. Try adding an attribute `sortKey` with the value of `earnings` to the `VictoryBar`
5. Confirm that it doesn't sort
6. Now edit chart data so that it follows this `interface { earnings: number; quarter: string }`
7. Confirm that it started sorting

Expected behavior

It should sort the data by specified `sortKey`

Actual behavior

It doesn't sort the data by specified `sortKey`

Environment

- Device:
- OS:
- Node:
- npm:

[kazimirchuk]

sorting_does_not_work.MOV