### 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


Ref<GLTFNode> gltf_node = p_state->nodes[p_node_index];
	ERR_FAIL_INDEX_V(gltf_node->light, p_state->lights.size(), nullptr);
	print_verbose("glTF: Creating light for: " + gltf_node->get_name());
	Ref<GLTFLight> l = p_state->lights[gltf_node->light];
	return l->to_node();
}
Camera3D *GLTFDocument::_generate_camera(Ref<GLTFState> p_state, const GLTFNodeIndex p_node_index) {
	Ref<GLTFNode> gltf_node = p_state->nodes[p_node_index];
	ERR_FAIL_INDEX_V(gltf_node->camera, p_state->cameras.size(), nullptr);
	print_verbose("glTF: Creating camera for: " + gltf_node->get_name());
	Ref<GLTFCamera> c = p_state->cameras[gltf_node->camera];
	return c->to_node();
}
GLTFCameraIndex GLTFDocument::_convert_camera(Ref<GLTFState> p_state, Camera3D *p_camera) {