Count of 1 is no longer serialized for items in certain components

The count field of items always used to serialize even when count is 1. This was mentioned as an intended feature during the 1.20.5 cycle as a useful feature to always be able to read the item count with the data command. In 1.20.5 - 1.21.11, this applied to items no matter where they are. In 26.1-snapshot-5, this no longer applies to items in certain components like container, bundle_contents, and use_remainder.

Expected behavior:

Using the data command, items should serialize the same way whether or not they are stored within a component.

Steps to reproduce:

Place one item in a shulker, pick it up, and run “/data get entity @s SelectedItem”

In 1.21.11 and earlier, the result will be: ⁨{components: {"minecraft:container": [{item: {count: 1, id: "minecraft:stone"}, slot: 0}]}, count: 1, id: "minecraft:shulker_box"}

In 26.1-snapshot-5, the result will be: ⁨{components: {"minecraft:container": [{item: {id: "minecraft:stone"}, slot: 0}]}, count: 1, id: "minecraft:shulker_box"}