### 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;
	}
	if (r_spec_gloss->diffuse_img.is_null()) {
		return;
	}
	if (p_material.is_null()) {
		return;
	}
	bool has_roughness = false;
	bool has_metal = false;
	p_material->set_roughness(1.0f);
	p_material->set_metallic(1.0f);
	Ref<Image> rm_img = Image::create_empty(r_spec_gloss->spec_gloss_img->get_width(), r_spec_gloss->spec_gloss_img->get_height(), false, Image::FORMAT_RGBA8);
	r_spec_gloss->spec_gloss_img->decompress();
	if (r_spec_gloss->diffuse_img.is_valid()) {
		r_spec_gloss->diffuse_img->decompress();
		r_spec_gloss->diffuse_img->resize(r_spec_gloss->spec_gloss_img->get_width(), r_spec_gloss->spec_gloss_img->get_height(), Image::INTERPOLATE_LANCZOS);
		r_spec_gloss->spec_gloss_img->resize(r_spec_gloss->diffuse_img->get_width(), r_spec_gloss->diffuse_img->get_height(), Image::INTERPOLATE_LANCZOS);
	}
	for (int32_t y = 0; y < r_spec_gloss->spec_gloss_img->get_height(); y++) {
		for (int32_t x = 0; x < r_spec_gloss->spec_gloss_img->get_width(); x++) {
			const Color specular_pixel = r_spec_gloss->spec_gloss_img->get_pixel(x, y).srgb_to_linear();
			Color specular = Color(specular_pixel.r, specular_pixel.g, specular_pixel.b);
			specular *= r_spec_gloss->specular_factor;
			Color diffuse = Color(1.0f, 1.0f, 1.0f);
			diffuse *= r_spec_gloss->diffuse_img->get_pixel(x, y).srgb_to_linear();
			float metallic = 0.0f;
			Color base_color;
			spec_gloss_to_metal_base_color(specular, diffuse, base_color, metallic);
			Color mr = Color(1.0f, 1.0f, 1.0f);