### Godot version

4.0.dev (f581f21dd61a8fb581b80d07755cdf60c95d146d)

### System information

Windows 10 - Ryzen 7 - 4070ti

### Issue description

When using the threaded resource loader, textures on materials are lost.

This is the scene being loaded in the IDE:
![image](https://github.com/godotengine/godot/assets/1945449/232dd16b-81c4-49cf-a980-3efcfa97ff79)

This is the result in runtime:
![image](https://github.com/godotengine/godot/assets/1945449/235176d3-6058-4bed-8fbe-cad14a5e0d32)


### Steps to reproduce

Use code such as the following to load a scene:
```
func _load_scene(p_scene_path):
	var new_scene : PackedScene
	if ResourceLoader.has_cached(p_scene_path):
		# Load cached scene
		new_scene = ResourceLoader.load(p_scene_path)
	else:
		# Start the loading in a thread
		ResourceLoader.load_threaded_request(p_scene_path)

		# Loop waiting for the scene to load
		while true:
			var progress := []
			var res := ResourceLoader.load_threaded_get_status(p_scene_path, progress)
			if res != ResourceLoader.THREAD_LOAD_IN_PROGRESS:
				break;

			_progress_bar = progress[0]
			await get_tree().create_timer(0.1).timeout

		# Get the loaded scene
		new_scene = ResourceLoader.load_threaded_get(p_scene_path)
	
	$CanvasLayer.visible = false
	add_child(new_scene.instantiate())
```

Now create a scene to load that has a material with a texture.

### Minimal reproduction project

[TestResourceLoader.zip](https://github.com/godotengine/godot/files/11549692/TestResourceLoader.zip)

shader_names->clearcoat_roughness = "clearcoat_roughness";
	shader_names->anisotropy = "anisotropy_ratio";
	shader_names->heightmap_scale = "heightmap_scale";
	shader_names->subsurface_scattering_strength = "subsurface_scattering_strength";
	shader_names->backlight = "backlight";
	shader_names->refraction = "refraction";
	shader_names->point_size = "point_size";
	shader_names->uv1_scale = "uv1_scale";
	shader_names->uv1_offset = "uv1_offset";
	shader_names->uv2_scale = "uv2_scale";
	shader_names->uv2_offset = "uv2_offset";
	shader_names->uv1_blend_sharpness = "uv1_blend_sharpness";
	shader_names->uv2_blend_sharpness = "uv2_blend_sharpness";
	shader_names->particles_anim_h_frames = "particles_anim_h_frames";
	shader_names->particles_anim_v_frames = "particles_anim_v_frames";
	shader_names->particles_anim_loop = "particles_anim_loop";
	shader_names->heightmap_min_layers = "heightmap_min_layers";
	shader_names->heightmap_max_layers = "heightmap_max_layers";
	shader_names->heightmap_flip = "heightmap_flip";
	shader_names->grow = "grow";
	shader_names->ao_light_affect = "ao_light_affect";
	shader_names->proximity_fade_distance = "proximity_fade_distance";
	shader_names->distance_fade_min = "distance_fade_min";
	shader_names->distance_fade_max = "distance_fade_max";
	shader_names->msdf_pixel_range = "msdf_pixel_range";
	shader_names->msdf_outline_size = "msdf_outline_size";
	shader_names->metallic_texture_channel = "metallic_texture_channel";
	shader_names->ao_texture_channel = "ao_texture_channel";
	shader_names->clearcoat_texture_channel = "clearcoat_texture_channel";
	shader_names->rim_texture_channel = "rim_texture_channel";