/damage with any damage type damages item entities

Using any damage type in /damage damages a targeted item entity.

This makes sense if you use a damage type like cactus or lava, but it even destroys it if the type doesn't make sense for items such as fall, drown, or fly_into_wall.

Steps to Reproduce:

1. Throw an item on the ground
2. Run a damage command using a damage type that wouldn't normally affect items.
   Example:

/damage @e[type=item,limit=1,sort=nearest] 10 minecraft:fall