[MC-175882] Buckets can't be shift-clicked into the fuel slot of furnaces

You can't shift click an empty bucket in the fuel slot of the furnace. This should work for getting a water bucket when "smelting" wet sponge.

Linked issues

Duplicate of MC-114478 ❓

This isn't a duplicate because an empty bucket can't be smelted, so the first slot isn't valid.

You also see this if the first slot is empty so the bucket could go there.

Duplicate of MC-59600.