[MC-276102] Riding a minecart cluster on rails through a nether portal crashes the game

This only happens without Minecart Experiments enabled. Sometimes the game also softlocks instead of crashing.

Steps to reproduce:

Build a nether portal with rails in front of it so minecarts can be sent through.
Summon a really large amount of minecarts on one rail (with a command block, for example).
Push the minecarts so they begin going towards the portal.
Ride one minecart.
Once the minecart cluster collides with the portal blocks, the game will crash. Video and crash reports are attached.
(The first crash report is an instant crash, the second crash report shows an OutOfMemoryError that occurred after being softlocked for some time.)