medusa: Store Route doesn't get billing_address relation

Bug report

Describe the bug

In the Medusa Storefront: After successful checkout I would like to display an order confirmation page where I among others show the billing_address from the Order. However my Order object just receives the shipping_address and NOT the billing_address (undefined). The issue probably lies here: https://github.com/medusajs/medusa/blob/master/packages/medusa/src/api/routes/store/orders/index.ts#L48 --> The store route doesn’t get the billing_address relation.

Expected behavior

Getting the billing_address relation in the Medusa Storefront (so that I can display my b2b customers a proper order confirmation including their billing address).