Improve `add_column_with_default_value` operation

## About
The [`add_column_with_default_value` command](https://github.com/fivetran/fivetran_partner_sdk/blob/main/schema-migration-helper-service.md#add_column_with_default_value) of the "schema migrations" operation group needs more love.

## References
- https://github.com/crate/cratedb-fivetran-destination/pull/107#pullrequestreview-3520831099
- https://github.com/crate/crate/issues/18783