### Godot version

0810ecaafdbee3ea747219e6ab3a8de5d2216a09

### System information

Windows 11, Nvidia 3000, firefox

### Issue description

Exporting the gltf file is corrupt in blender.

### Steps to reproduce

1. Open project.
2. Export as glb
3. Open in blender
4. Blender display many warnings

![image](https://user-images.githubusercontent.com/32321/216740742-de662c5c-f5c3-44b5-a36e-8ad33defdbba.png)


### Minimal reproduction project

https://cdn.discordapp.com/attachments/598003845657788438/1071249610896580691/Test_Game_Project.zip


err = _determine_skeletons(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	err = _create_skeletons(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	err = _create_skins(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	err = _parse_meshes(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	err = _parse_lights(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	err = _parse_cameras(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	err = _parse_animations(p_state);
	ERR_FAIL_COND_V(err != OK, ERR_PARSE_ERROR);
	
	_assign_scene_names(p_state);
	Node3D *root = memnew(Node3D);
	for (int32_t root_i = 0; root_i < p_state->root_nodes.size(); root_i++) {
		_generate_scene_node(p_state, root, root, p_state->root_nodes[root_i]);
	}
	return OK;
}
Error GLTFDocument::append_from_file(String p_path, Ref<GLTFState> r_state, uint32_t p_flags, String p_base_path) {