Thief not stealing certain held items from wild pokemon.

[Oryso]

Describe the bug
When you use the move Thief on pokemon holding certain held items, after the battle your pokemon that used Thief won't be holding the item as it should be.

To Reproduce
Steps to reproduce the behavior:

1. Find a wild pokemon holding a held item (easy with Frisk ability)
2. Use Thief on said pokemon
3. Finish battle
4. No item in your pokemons item slot

Expected behavior
To have the stolen item in your pokemons item slot

Screenshots

Username:
Oryso

Server name (all applicable):
Orion (possibly all, haven't checked)

Additional context
It seems that the 'treasure' items that's only use is to sell to NPCs still work just fine, but with regular held items and berries, they won't actually get stolen.

Might have something to do with fixing the issue where held items got lost in battles, as mentioned in a previous changelog, but just a theory:
"Fixed held items disappearing when battling wild Pokémon, naturally spawned Trainers, or Nebula Gym NPCs due to Knock Off, Switcharoo, type-Gem, Focus Sash, etc."