[1.21.4] Missing json files when generating Item Models

[Stein-N]

Minecraft Version: 1.21.4

NeoForge Version: 21.4.7-beta

Logs: no logs

Steps to Reproduce:

1. Create a class that extends the ItemModelProvider
2. use basicItem() to generate an Item Model

Description of issue:
The problem here is that it only generates the json file inside the assets/mod_id/models/item directory but not the ItemModelModifier json inside the assets/mod_id/items directory.
Also there is currently no way to alter the Modifier for items

[XFactHD]

The custom model providers provided by NeoForge have not been updated to generate the item model definition files because we are working on replacing them with patches to the vanilla providers. This will be resolved once #1725 is merged.

[Stein-N]

When i understand that PR correct the datagen will be comparible in any maner to the fabric datagen, when it comes to usability of all Vanilla Tools and helper methods right?

[XFactHD]

Yes, the vanilla helpers will be usable the same way they are in Fabric.