9f2ab9cba0
The name `id_root` was not descriptive, and was just a hold-over from the equivalent (now deprecated) property on the Action itself. `target_id_type` is more clear, reflecting that this is the type of ID the Slot is intended to animate. This PR also renames the corresponding `id_root_icon` to `target_id_type_icon`. Note that this PR updates the GLTF import/export core addon to adhere to these name changes as well. Pull Request: https://projects.blender.org/blender/blender/pulls/133164