Zombie Piglin Jockeys Cannot Be Transported by Minecarts

In version 26.0, a new entity spawn trigger spawn_baby_jockey was added alongside spawn_adult and spawn_baby. However, zombie piglin jockeys spawned with this trigger cannot be picked up or transported by minecarts. This breaks many redstone contraptions that rely on minecart-based sorting or killing chambers, severely limiting player creativity and potentially causing massive entity buildup and world lag.

Steps to Reproduce:

1. Build the setup as shown:

   • Place an activated rail on top of a redstone block.

   • Place a minecart on the rail.

   • Surround the minecart with blocks (e.g., glass) on all four sides.

   • In the northeast corner, place a soul sand block, put a wither rose on top of it, and surround it with blocks to simulate a mob transport/killing system.

2. Spawn zombie piglins by right-clicking repeatedly with a zombie piglin spawn egg above the minecart. Observe that a very small proportion of them (approx. 75/10000) cannot enter the minecart.

3. Alternatively, summon a zombie piglin with the spawn_baby_jockey trigger using the command:
   /summon zombie_pigman ~ ~ ~ ~ ~ spawn_baby_jockey

4. Attempt to move the minecart or have the piglin enter it.

Observed Result:

• Some zombie piglins spawned with the spawn egg cannot be picked up by the minecart (rare, but reproducible).

• Zombie piglins summoned with the spawn_baby_jockey trigger consistently fail to enter the minecart.

• Piglins summoned with spawn_adult or spawn_baby behave normally and can be transported by minecarts.

Expected Result:
All zombie piglins, including baby jockeys, should be able to enter and be transported by minecarts, just like other variants.