Can't see text in tooltip with dark: true

[davetapley]

It's very hard to see, but there is a date here:

---

I assume it is this, but no class so I can't even target it with CSS as a workaround 😞

https://github.com/TanStack/react-charts/blob/beta/src/components/Tooltip.tsx#L161-L169

[davetapley]

I was able to work around by removing dark: true and:

.tickLabel {
  stroke: lightgrey;
}