Laravel Polymorphic Relations And Has Many Through

Tried to find a solution, but couldn’t find a similar problem.
I have two classes: Product and TempProduct. Both inherit from BaseProduct.
BaseProduct doesn’t have a table name defined, but Product and TempProduct do.

I also have an Order model that has the following relation:

public function products()
    {
        return $this->morphTo('products', 'product_type', 'product_id');
    }

The product_type column is an enum with values “product” or “product_temp” to indicate which table the product comes from.

Then I have a Shop model that is connected to Order:

public function shop_order()
    {
        return $this->hasMany(Order::class, 'order_id', 'id')->withTrashed();
    }

Previously, before adding TempProduct, I used the following hasManyThrough relation:

public function products_sell()
    {
        return $this->hasManyThrough(Product::class, Order::class, 'order_id', 'id', 'id', 'product_id');
    }

Now that I’ve added TempProduct and switched to a polymorphic relation, I’m not sure how to implement hasManyThrough in this case.