### Godot version

v4.1.beta1.official [828ec2c5d]

### System information

Windows 11 Home, v4.1.beta1.official [828ec2c5d], All Renderers, NVidia GeForce RTX 3060 Ti,  Drivers 535.98

### Issue description

When enabling the "Y Sort Enabled" ordering method for a Sprite2D, the sprite will be rendered entirely black.

![grafik](https://github.com/godotengine/godot/assets/29011290/6fa4da16-d9a5-4c3b-a9e4-c1bba53c2183)
![grafik](https://github.com/godotengine/godot/assets/29011290/cbf499ae-f3f7-4c07-98b2-a1a667d810c2)


### Steps to reproduce

Simply create a Sprite2D Node, assign any texture to it and activate Y-Sorting

### Minimal reproduction project

[GDB_4.1_ysort.zip](https://github.com/godotengine/godot/files/11704361/GDB_4.1_ysort.zip)

Item *canvas_item = canvas_item_owner.get_or_null(p_item);
	ERR_FAIL_COND(!canvas_item);
	if (canvas_item->skeleton == p_skeleton) {
		return;
	}
	canvas_item->skeleton = p_skeleton;
	Item::Command *c = canvas_item->commands;
	while (c) {
		if (c->type == Item::Command::TYPE_MESH) {
			Item::CommandMesh *cm = static_cast<Item::CommandMesh *>(c);
			if (canvas_item->skeleton.is_valid()) {
				if (cm->mesh_instance.is_null()) {
					cm->mesh_instance = RSG::mesh_storage->mesh_instance_create(cm->mesh);
				}
				RSG::mesh_storage->mesh_instance_set_skeleton(cm->mesh_instance, canvas_item->skeleton);
			} else {
				if (cm->mesh_instance.is_valid()) {
					RSG::mesh_storage->mesh_instance_free(cm->mesh_instance);
					cm->mesh_instance = RID();
				}
			}
		}
		c = c->next;
	}
}
void RendererCanvasCull::canvas_item_set_copy_to_backbuffer(RID p_item, bool p_enable, const Rect2 &p_rect) {