menu: fix product qty

src/pages/menu/components/MenuList/MenuList.tsx

@@ -248,10 +248,12 @@ export function MenuList({ data, categoryRefs }: MenuListProps) {
 
                           <AddToCartButton />
 
-                          {items.find((i) => i.id === item.id) && (
+                          {items.some((i) => i.id === item.id) && (
                             <Badge
                               count={
-                                items.find((i) => i.id === item.id)?.quantity
+                                items
+                                  .filter((i) => i.id === item.id)
+                                  .reduce((total, item) => total + item.quantity, 0)
                               }
                               className={
                                 styles.cartBadge +
@@ -264,7 +266,9 @@ export function MenuList({ data, categoryRefs }: MenuListProps) {
                                 backgroundColor: colors.primary,
                               }}
                               title={`${
-                                items.find((i) => i.id === item.id)?.quantity
+                                items
+                                  .filter((i) => i.id === item.id)
+                                  .reduce((total, item) => total + item.quantity, 0)
                               } in cart`}
                             />
                           )}