Items with their `enchantments` component removed cannot be enchanted

Removing the enchantments component from an item also removes its ability to be enchanted by any means, including via enchanting table, anvil, /enchant and the enchant_randomly and enchant_with_levels item modifier functions.

When using /enchant or /item modify with one of the aforementioned functions, the command succeeds despite the fact that no enchantment was added to the item.

How to reproduce:

1. Execute the following command:

   /give @s minecraft:diamond_sword[!minecraft:enchantments]

2. While holding the sword you were given, execute the following command:

   /enchant @s minecraft:sharpness

   → ❌ The command succeeds according to the message printed in the chat, but no enchantment was applied.

Expected result:

The item would be enchanted (regaining the enchantments component).

Observed result:

The command succeeded but no enchantment was added.