Wandering Trader when created from egg spawns without Llamas

Affects versions:

Java 1.16.1

Repro steps:

1. Launch the game.
2. Create a new game in Creative Mode.
3. Spawn Wandering Trader from Egg.
4. Observe the issue.

Observed results:

When spawned from Egg, Wandering Trader spawnes without Llamas.

Expected results:

Wandering Trader spawns from Egg together with 2 Llamas.