/enchant feedback text is inaccurate if not all entities could receive the enchantment

If at least one of the entities could receive the enchantment, the feedback text will claim all entities could receive it. To reproduce:

1. Kill all entities
2. Place an armor stand
3. Hold an non-enchanted sword
4. Run /enchant @e unbreaking
5. The feedback text will say "Applied enchantment Unbreaking I to 2 entities", which is wrong