### Godot version

4.0.dev (d0398f62f0)

### System information

Windows 10

### Issue description

`PlaceholderTexture2D::size` property is registered as a `Vector2I`: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/resources/texture.cpp#L3389  
It should be a `Vector2`, as setter method use a `Vector2` and so parent class getter method.

### Steps to reproduce

N/A

### Minimal reproduction project

N/A
int lw, lh;
	Ref<Image> image;
	image.instantiate();
	bool request_3d;
	bool request_normal;
	bool request_roughness;
	int mipmap_limit;
	Error err = _load_data(p_path, lw, lh, image, request_3d, request_normal, request_roughness, mipmap_limit);
	if (err) {
		return err;
	}
	if (texture.is_valid()) {
		RID new_texture = RS::get_singleton()->texture_2d_create(image);
		RS::get_singleton()->texture_replace(texture, new_texture);
	} else {
		texture = RS::get_singleton()->texture_2d_create(image);
	}
	if (lw || lh) {
		RS::get_singleton()->texture_set_size_override(texture, lw, lh);
	}
	w = lw;
	h = lh;
	path_to_file = p_path;
	format = image->get_format();
	if (get_path().is_empty()) {