Fix `TestMigration` failing due to changes in realm migration logic
Fix `TestMigration` failing due to changes in realm migration logic

Fixes failures as seen at https://github.com/ppy/osu/runs/4927916031?check_suite_focus=true.

NeoAdonis/osu,peppy/osu,peppy/osu,ppy/osu,NeoAdonis/osu,NeoAdonis/osu,peppy/osu,ppy/osu,ppy/osu