Optimizations for preformatted data

[MxFr]

I found some more optimization potential while profiling our chart components. This is more specific than my other pull requests, but can provide worthwhile performance benefits for users are willing to adapt the input data so that victory can consume it without preprocessing.

Both changes target cases where the creation of new objects is not required, if the data that is supplied to a victory component already matches the internal data format.

[boygirl]

So the usage of this would look like:

<VictoryArea
  data={[ { _x: 0, _y0: 1, _y: 2 } ...]}
  x="_x"
  y="_y"
  y0="_y0"
/>

This change makes sense to me, and because of the very specific requirement for data accessor values, I don't expect it to cause any breaking changes or unexpected behavior.

[boygirl]

@MxFr Sorry about the timing. Do you have a moment to rebase and run prettier so we can get this merged?

[MxFr]

Sorry for being so unresponsive, but I was on a vacation over chrismas. The rebase to prettier is now done.

[boygirl]

I'll get these released tonight :)

[boygirl]

Released as victory@31.1.0