Ensure `setChanged` is called on slots when changes to its item stacks are made

[BlayTheNinth]

Minecraft Version

1.21.10

Mod Loader

NeoForge

Describe the Issue

NeoForge's StackCopySlot will not commit changes made to the ItemStack back to the ResourceHandler unless setChanged is called. This will lead to dupe bugs with any mods that use ResourceHandlerSlot.

Logs

dev