We enabled Apple Education Support in JSS (but are not actually enrolled in the program yet as we are in Norway) Subsequently we disabled all the Apple Education Support features in JSS and rebooted the server.
Now when a restored iPad gets its config (pre-stage enrollment profile) from our JSS server we are stuck at the
Apparently this prompt wants us to log in with an Apple School Manager Apple ID but we are not enrolled in this program yet. How do we get past this screen?
If you see that screen that means that the iPad is set up as a Shared iPad. You likely had the "Enable Shared iPad" setting checked in your pre-stage enrollment initially. That'll configure iPads assigned to that pre-stage as Shared iPads, which (as you discovered) won't be particularly useful if you're not using Apple School Manager.