Having a block in both hands of allay causes z-fighting

The Bug

Allay's main hand and off hand with items will cause z-fighting

How To Reproduce

• use this command

  /summon minecraft:allay ~ ~ ~ {Silent:1b,NoAI:1b,HandItems:[{id:"minecraft:obsidian",Count:1b},{id:"minecraft:quartz_block",Count:1b}]}

Observed Behavior

Z-fighting is present.

Expected Behavior

No z-fighting would occur.