ui: Add the `SwitchField` component (#34713)

This will be useful for both the current agent panel and some other
onboarding stuff we're working on. Also ended up removing the
`SwitchWithLabel` as it was unused.

Release Notes:

- N/A
64ce696aaeDanilo Leal committed on 7/18/2025, 6:03:14 PM· committed by GitHubparent87555d3
1 file changedLine totals unavailable