[MC-306918] Vexes hold smaller swords than baby zombie variants and baby piglins do

Vexes and the new baby humanoids are both pixel consistent, but the swords held by Vexes aren’t.

Steps to reproduce:

Summon a Baby Zombie and a Vex with these 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 the Baby Zombie and the Vex are different sizes

Expected Behavior:

The swords held by the Baby Zombie and the Vex are the same size

Linked issues

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The sword size held by Baby Zombies are inconsistent with the sword size held by Vexes.

In every prior version of Minecraft, baby humanoid mobs held scaled down swords to match their size.

Instead of being scaled up, the swords held by baby humanoid mobs need to be scaled down to match the size of the swords held by Vexes.

1.21.11. The Vexes have a unique sword size, matching the smaller size of the mob.

26.1 Pre Release 3. Baby humanoid mobs carry scaled up swords and weapons, inconsistent size intentionally used by the Vex mob.