Enchanted chests do not display an enchantment glint when equipped on donkeys, mules or llamas

The bug

If a chest with an enchantment glint is equipped on a mob which can have a chest equipped, the enchantment glint will not play. This is unlike saddles, which correctly show the enchant glint.

How to reproduce

1. Tame a donkey

2. /give @s saddle[minecraft:enchantment_glint_override=true]

3. /give @s chest[minecraft:enchantment_glint_override=true]

4. Equip both on the donkey

Expected results

Both the saddle and chest would display the enchantment glint.

Actual results

The saddle correctly displays the enchantment glint, but the chest does not.

How to fix

Make the chest rendering be handled by the equipment system; this would also fix MC-279508.

Further notes

Chests as items do not display the enchantment glint due to a bug; see MC-69683. This could be fixed by reopening and actually fixing MC-276877, as the item would then no longer be using the block entity rendering system.