Left over from MC-127094.

This is inconsistent - all cases of players dropping items should appear equivalent.

NOTE: This has not actually been fixed in 19w42a, and is still present in subsequent versions.

To reproduce:

1. Open the survival inventory in either creative or survival mode.
2. Hover over an item in the inventory and press the drop key. - Notice how your character's arm doesn't animate as if they had dropped an item like in the non-inventory case (although the hand may move up and down if the dropped item slot is the selected slot).
3. Drag an item out of the inventory screen, and release it, dropping it. - The character doesn't display an animation for this case either.
4. Now fill your inventory with items, switch to survival and have a stack of honey bottles ready. Drink one of said honey bottles and note how the dropped honey bottle does not cause your hand to swing as if you had thrown said item put after consumption. While there are other behaviours that cause such item dropping, such as filling bottles and buckets with a full inventory, a hand animation already plays for the action and so none is needed for this.