Restarts checkout flow for state 'confirmation'

app/models/spree/order.rb

@@ -433,7 +433,7 @@ module Spree
       all_adjustments.destroy_all
       payments.clear
       shipments.destroy_all
-      restart_checkout_flow if state == "payment"
+      restart_checkout_flow if state.in?(["payment", "confirmation"])
     end
 
     def state_changed(name)

spec/system/consumer/split_checkout_spec.rb

@@ -884,7 +884,6 @@ describe "As a consumer, I want to checkout my order", js: true do
         end
 
         it "emptying the cart changes the order state back to address" do
-          pending "fixing issue #9299"
           visit main_app.cart_path
           expect {
             find('#clear_cart_link').click