definePropsRefs return type

[extrem7]

Docs describe return type as Ref<> but actually it's ComputedRef<DeepReadonly<>> that produces a lot of TS errors when migrating project from toRefs to definePropsRefs: when prop ref is passed into composable function its type should be Ref<readonly or so.

[sxzz]

The returning type of definePropsRefs is stricter than toRefs. Because toRefs doesn't know the context in handling props. For definePropsRefs we know the props should be readonly and never be assigned.

[extrem7]

Should it be described in docs?

[sxzz]

I think it's worth to mention this point. PR welcome.