Milking a disguised cow creates a milk bucket but is completely silent

[James103]

To reproduce:

1. Starting with Minecraft 1.16.5, install Fabric loader and Fabric API.
2. Install mobdisguises-1.0.0-fabric and disguiselib-1.0.2-fabric.
3. Create a new world with cheats enabled.
4. /summon cow (summons an undisguised cow)
5. /summon minecraft:cow ~ ~ ~ {CustomName: '""', DisguiseLib: {DisguiseType: "minecraft:player", DisguiseAlive: 1b}, UUID: [I;-2098678989,-1503901171,-1600499207,-1228930832]} (summons a cow disguised as a player, also works with non-player disguises)
6. /give @p bucket 16
7. Milk the disguised cow. You will get a milk bucket, but no entity.cow.milk sound will play.
8. Milk the undisguised cow. You will get a milk bucket and the entity.cow.milk sound will play as usual.