Piglins immediately dismount any entity that they are riding

The bug

If using commands to summon a mob being ridden by a piglin, the piglin dismounts automatically.

How to reproduce

1. Run

   /summon ravager ~ ~ ~ {Passengers:[{id:piglin,HandItems:[{id:crossbow,Count:1b}]}]}

   → ❌ The ravager is summoned, but its piglin rider automatically dismounts the ravager.

Notes: Piglins passengers with the NoAI tag do not dismount the mob that they're riding.