Fix broken order edit shipment

As an administrator
    I want to create and edit orders
 as an enterprise manager viewing the edit page with different shipping methods can edit shipping method
     Failure/Error: expect(page).to have_content "Shipping: #{different_shipping_method_for_distributor1.name}"
       expected to find text "Shipping: Different" in "Logged in as : [email protected] Account Logout Store DASHBOARD PRODUCTS ORDER CYCLES ORDERS REPORTS ENTERPRISES CUSTOMERS Order # R813516688 CANCEL ACTIONS BACK TO ORDER LIST John Doe - ADD PRODUCT NAME OR SKU (ENTER AT LEAST FIRST 4 CHARACTERS OF PRODUCT NAME) Select a variant 100 - PENDING ITEM DESCRIPTION PRICE QUANTITY TOTAL Product #3 - 9924 - 1g, S $10.00 1 x none $10.00 Product #4 - 5548 - 1g, S $10.00 1 x none $10.00 Product #5 - 8080 - 1g, S $10.00 1 x none $10.00 Product #6 - 3591 - 1g, S $10.00 1 x none $10.00 Product #7 - 6461 - 1g, S $10.00 1 x none $10.00 Product #8 - 4071 - 1g, S $110.00 1 x none $110.00 SHIPPING METHOD Different $0.00 Normal $0.00 Different $0.00 Tracking: U10000 LINE ITEM ADJUSTMENTS NAME AMOUNT Tax 1 10.0%: $10.00 ORDER ADJUSTMENTS NAME AMOUNT Transaction fee: $0.00 ORDER TOTAL $160.00 DISTRIBUTION Distributor: Enterprise 4 Order cycle: Order Cycle 2 UPDATE AND RECALCULATE FEES or BACK ORDER INFORMATION STATUS COMPLETE TOTAL : $160.00 SHIPMENT : PENDING PAYMENT : BALANCE DUE DATE COMPLETED : November 08, 2020 1:51 AM ORDER DETAILS CUSTOMER DETAILS ADJUSTMENTS PAYMENTS RETURN AUTHORIZATIONS"
     # ./spec/features/admin/order_spec.rb:291:in `block (5 levels) in <top (required)>'

app/controllers/api/shipments_controller.rb

@@ -30,7 +30,7 @@ def update
         @shipment.adjustment.open
       end
 
-      @shipment.update(params[:shipment])
+      @shipment.update(shipment_params[:shipment])
 
       if unlock == 'yes'
         @shipment.adjustment.close
@@ -104,7 +104,8 @@ def get_or_create_shipment(stock_location_id)
 
     def shipment_params
       params.permit(
-        [:id, :order_id, :variant_id, :quantity, { shipment: :tracking}]
+        [:id, :order_id, :variant_id, :quantity,
+         { shipment: [:tracking, :selected_shipping_rate_id] }]
       )
     end
   end