Beatmap offset setting is applied to all difficulties even when they may have different audio/mp3 files

[Kori3]

Type

Game behaviour

Bug description

An issue present since the last major update (same local offset saving in all diffs)
This mainly affects song packs and songs with speed rates as difficulties, not ranked maps
A solution could be to only keep the offset in diffs with the same audio file

Screenshots or videos

osu.mp4

Both difficulties are using different audio files, test1 is timed early and test2 is late

Map used for testing in the video

Version

2023.815.0

Logs

Not needed