Async Relay Resolvers

There is no mention on [Relay Resolvers](https://relay.dev/docs/guides/relay-resolvers/) about async resolvers / promises, and they seem to not work currently (I get an error about the object not having an "id" field, since the unresolved promise does not have the field; related #4536). I'm trying to use the experimental Relay Resolvers to nicely manage optimistic states / updaters and querying for several external REST APIs for a client-only app. To do this, async resolvers are necessary to make the REST calls. The Relay Resolvers system seems like a really cool way to support something like this, since I can just write clientside code to fetch data for a field and have relay manage syncing that across my app / fetching as needed if its not cached etc. The lack of async seems like a restrictive limitation atm. Is this something that is planned to be changed?