ENGCOM-2227: [Forwardport] Update checkout translations #16638

 - Merge Pull Request #16638 from JeroenVanLeusden/magento2:patch-1
 - Merged commits:
   1. 8ce1d8f

Author: magento-engcom-team

app/code/Magento/Checkout/i18n/en_US.csv

@@ -177,3 +177,7 @@ Payment,Payment
 "We received your order!","We received your order!"
 "Thank you for your purchase!","Thank you for your purchase!"
 "Password", "Password"
+"Something went wrong while saving the page. Please refresh the page and try again.","Something went wrong while saving the page. Please refresh the page and try again."
+"Item in Cart","Item in Cart"
+"Items in Cart","Items in Cart"
+"Close","Close"