FWIW, the client can set the remote version code to whatever it wants over the GraphQL API. So if you need a down and dirty one-time reconcilitation of the remote version code so you can increment from a known starting point, you can manually edit the applicable version.js file for the platform in question and run eas build. E.g. I just did that and:
✔ Incremented versionCode from 7 to 12.
It would be great to have some sort of command or UI for this but 