[PP-1] Make link widget autocomplete work (for uri and uri-reference props)

Postponing this on 📌 Confirm Semi-coupled form elements can work with autocomplete Active

The blocker is in

📌 Allow 6.x version of justinrainbow/json-schema Active is going to be needed here because it uses filter_var to validate URLs and that means entity:node/3 doesn't validate as a valid URI.

https://github.com/jsonrainbow/json-schema/pull/800 is what fixes this upstream but it's only in the 6.x branch.

I think I have a way to work around #6 in the meantime

🐛 ComponentValidator ignores the set validator and creates a new one Active prevents us from being able to do this using the APIs provided by justinrainbow/json-schema

This is blocked on 📌 Split model values into resolved and raw Active , 🐛 "There are no users matching '' error message appears after reloading the editor page Active and 🐛 ComponentValidator ignores the set validator and creates a new one Active

Pushed some code that includes a cherry-pick (Squashed) of 📌 Split model values into resolved and raw Active and 🐛 "There are no users matching '' error message appears after reloading the editor page Active that is working on the backend if the core patch from 🐛 ComponentValidator ignores the set validator and creates a new one Active is applied

On the frontend - current status is the autocomplete value (e.g Some node title (3) doesn't validate with ajv as a uri and hence the field is invalid. I have written a transform to translate this to a uri (entity:node/1) but transforms aren't applied until after the field value validates so we might need to revisit that. Started looking at ajv keywords which are a schema extension that adds support for transforms - but these don't work on strings, only on nested data/objects (because the string is passed by value when we call jsonSchemaValidate)