Fix potential crash during stable install migration due to multiple configuration files
Fix potential crash during stable install migration due to multiple configuration files

Apparently this can be a thing on windows.

Closes https://github.com/ppy/osu/discussions/16689.

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