SST-102 Fixed automatic membership valid to date population regardless of cart position

Author: yuryyas

client-html/src/js/containers/checkout/utils/index.tsx

@@ -406,7 +406,7 @@ const getInvoiceLinePrices = (item: CheckoutItem, lines: AbstractInvoiceLine[],
   };
 
   const validTo = item.type === "membership" ? {
-    validTo: lines[0]?.membership?.validTo
+    validTo: targetLine?.membership?.validTo
   } : {};
 
   return {