Conditionally required props

This looks like a need driven by a display builder UX, not by UI component modelling. So such feature doesn't seem to belong to SDC.

if the {type: boolean} cta.enabled prop is true, also require the cta.text and cta.url props)

Maybe the component is ill defined. Maybe the cta.enabled is not necessary because the same as the cta.text and cta.url expression.