Add inset variant to `ListItem` (#3422)

This PR adds an inset variant to the `ListItem` component.

We're now using this inset variant for the `ListItem`s we render in
pickers.

Release Notes:

- N/A
874fde09abMarshall Bowers committed on 11/28/2023, 7:27:19 PM· committed by GitHubparent132ad59
4 files changedLine totals unavailable