Using Smithing Table with two stacks of items and then picking up the output item using Shift plays smithing sound multiple times

The bug

When using a Smithing Table using two stacks of items and then using Shift to pick up the output item from the output slot, the smithing sound is played multiple times depending on the number of items produced.

How to reproduce

1. Install the data pack below in a world for easier reproduction.

2. Obtain a stack of Iron Ingots and Gold Ingots, and then place down a Smithing Table.

3. Place the stack of Iron Ingots in the first input slot and the stack of Gold Ingots in the last input slot.

4. Pick up the Netherite Ingot from the output slot using Shift.
   → ❌ You will hear the smithing sound multiple times.