### 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
if (!texture.is_valid()) {
		texture = RS::get_singleton()->texture_2d_placeholder_create();
	}
	return texture;
}
Ref<Image> GradientTexture2D::get_image() const {
	if (!texture.is_valid()) {
		return Ref<Image>();
	}
	return RenderingServer::get_singleton()->texture_2d_get(texture);
}
void GradientTexture2D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_gradient", "gradient"), &GradientTexture2D::set_gradient);
	ClassDB::bind_method(D_METHOD("get_gradient"), &GradientTexture2D::get_gradient);
	ClassDB::bind_method(D_METHOD("set_width", "width"), &GradientTexture2D::set_width);
	ClassDB::bind_method(D_METHOD("set_height", "height"), &GradientTexture2D::set_height);
	ClassDB::bind_method(D_METHOD("set_use_hdr", "enabled"), &GradientTexture2D::set_use_hdr);
	ClassDB::bind_method(D_METHOD("is_using_hdr"), &GradientTexture2D::is_using_hdr);
	ClassDB::bind_method(D_METHOD("set_fill", "fill"), &GradientTexture2D::set_fill);
	ClassDB::bind_method(D_METHOD("get_fill"), &GradientTexture2D::get_fill);
	ClassDB::bind_method(D_METHOD("set_fill_from", "fill_from"), &GradientTexture2D::set_fill_from);
	ClassDB::bind_method(D_METHOD("get_fill_from"), &GradientTexture2D::get_fill_from);
	ClassDB::bind_method(D_METHOD("set_fill_to", "fill_to"), &GradientTexture2D::set_fill_to);
	ClassDB::bind_method(D_METHOD("get_fill_to"), &GradientTexture2D::get_fill_to);
	ClassDB::bind_method(D_METHOD("set_repeat", "repeat"), &GradientTexture2D::set_repeat);
	ClassDB::bind_method(D_METHOD("get_repeat"), &GradientTexture2D::get_repeat);
	ClassDB::bind_method(D_METHOD("_update"), &GradientTexture2D::_update);
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "gradient", PROPERTY_HINT_RESOURCE_TYPE, "Gradient", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_EDITOR_INSTANTIATE_OBJECT), "set_gradient", "get_gradient");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "width", PROPERTY_HINT_RANGE, "1,2048,or_greater,suffix:px"), "set_width", "get_width");