Migration error when attempting to make property required in abstract type

[VictorPruefer]

I'm trying to make a property required, in an abstract type, but fail to create a migration due to an error.

Steps to Reproduce:

1. Abstract type (e.g. TeamOwnable) with an optional property (e.g. team), applied migration.
2. Ensure no entry without a team exists.
3. Change the property to required and try to migrate.
4. As fill expression during the migration, use assert_exists(.team) as described here

The migration fails with the following error:
edgedb error: EdgeDB could not resolve migration with the provided answers. Please retry with different answers.

No matter which fill expression I use, the migration fails. Any workaround idea is appreciated.

• EdgeDB Version: "4.7+45e4acc"
• EdgeDB CLI Version: 4.1.0+a8fe4d7
• OS Version: macOS 13.6