### 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


return Error::FAILED;
	}
	for (Ref<GLTFDocumentExtension> ext : document_extensions) {
		ERR_CONTINUE(ext.is_null());
		err = ext->export_post(p_state);
		ERR_FAIL_COND_V(err != OK, err);
	}
	return OK;
}
Error GLTFDocument::_serialize_gltf_extensions(Ref<GLTFState> p_state) const {
	Vector<String> extensions_used = p_state->extensions_used;
	Vector<String> extensions_required = p_state->extensions_required;
	if (!p_state->lights.is_empty()) {
		extensions_used.push_back("KHR_lights_punctual");
	}
	if (p_state->use_khr_texture_transform) {
		extensions_used.push_back("KHR_texture_transform");
		extensions_required.push_back("KHR_texture_transform");
	}
	if (!extensions_used.is_empty()) {
		extensions_used.sort();
		p_state->json["extensionsUsed"] = extensions_used;
	}
	if (!extensions_required.is_empty()) {
		extensions_required.sort();
		p_state->json["extensionsRequired"] = extensions_required;
	}
	return OK;
}
Error GLTFDocument::_serialize_scenes(Ref<GLTFState> p_state) {