Max Health Equipped Armor Attributes Reset when Join World

Steps to Reproduce:

1. /item replace entity @s armor.head with iron_helmet[minecraft:attribute_modifiers=[{id:"test",type:"max_health",amount:4,operation:"add_value"}]]

   1. Equip something with the max health attribute

2. /effect give @s instant_health 5 5

   1. Heal to full

3. Leave & Rejoin world

Observed Results:
Health is reset to 20

Expected Results:
Health maintains elevated value from before leaving the game (24)