custom height display plays a null sound

[microlith57]

My mods and Everest install are up to date

Yes

I have recreated the bug with only Everest OR a minimum number of mods enabled

Yes

Describe the bug

https://github.com/EverestAPI/Everest/blob/dev/Celeste.Mod.mm/Mod/Entities/CustomHeightDisplay.cs#L33

displaySound is only set if target > from, but is used if Text is nonempty. it defaults to null. playing a null sound crashes if vivhelper is loaded