Definition for _dataDiff LayerProp is incorrect

[jcready]

https://deck.gl/docs/api-reference/core/layer#_datadiff https://github.com/danmarshall/deckgl-typings/blob/ba8fec4019494470a6c141052ad0c77e3d467cbc/deck.gl__core/index.d.ts#L1066

It should be returning an array.

_dataDiff?: (newData: D, oldData: D) => Array<{ startRow: number; endRow: number }>;