Baby Zombie and Baby Piglin variants hold larger swords than Vexes do

Baby humonoid mobs, such as the Baby Zombie and Baby Piglin variants have oversized inconsistent swords, compared to Vexes and previous versions.

Steps to Reproduce:

1. Summon a Baby Zombie and a Vex with the following commands

   /summon zombie ~1 ~ ~ {IsBaby:1b,NoAI:1b,equipment:{mainhand:{id:"minecraft:iron_sword"},head:{id:"minecraft:iron_helmet"}}}

   /summon vex ~2 ~ ~ {NoAI:1b,equipment:{mainhand:{id:"minecraft:iron_sword"}}}

Observed Behavior:

The swords held by Baby Zombies are inconsistent with the swords Vexes hold and previous Minecraft versions.

Expected Behavior:

The swords held by the Baby Zombies are scaled down to match the size of the mob and match the size of existing mobs.