Enchantment glint is applied to models once for each texture layer

The bug

When an enchanted item model uses more than one layer, the opacity of the enchantment glint on it is increased for each additional layer. This can be seen on leather armour both when worn and in the inventory, although I first noticed this with a resource pack that added an alternate model for enchanted books using CustomModelData. I have provided a resource pack that demonstrates this in this report.

How to reproduce

1. Download the attached resource pack [^Enchantment Glint Bug Demo.zip]

2. Pre-24w09a:
   /give @s minecraft:enchanted_book
   /give @s minecraft:enchanted_book{CustomModelData:1}
   /give @s minecraft:enchanted_book{CustomModelData:2}
   /give @s minecraft:enchanted_book{CustomModelData:3}
   Post-24w09a:
   /give @s minecraft:enchanted_book
   /give @s minecraft:enchanted_book[minecraft:custom_model_data=1]
   /give @s minecraft:enchanted_book[minecraft:custom_model_data=2]
   /give @s minecraft:enchanted_book[minecraft:custom_model_data=3]

   → The enchantment glint intensity increases with an increasing amount of layers