fix: cart delete mutation and console warnings

- Fix checkoutLinesDelete mutation: use 'id' param and 'linesIds' instead of 'lineIds'
- Fix viewport metadata warning: move to separate viewport export in layout.tsx
- Add sizes prop to checkout Image with fill
- Fix CartDrawer init checkout useEffect to prevent re-render loops
- Various product detail improvements

src/lib/saleor/mutations/Checkout.ts

@@ -50,8 +50,8 @@ export const CHECKOUT_LINES_UPDATE = gql`
 `;
 
 export const CHECKOUT_LINES_DELETE = gql`
-  mutation CheckoutLinesDelete($checkoutId: ID!, $lineIds: [ID!]!) {
-    checkoutLinesDelete(checkoutId: $checkoutId, lineIds: $lineIds) {
+  mutation CheckoutLinesDelete($id: ID!, $linesIds: [ID!]!) {
+    checkoutLinesDelete(id: $id, linesIds: $linesIds) {
       checkout {
         ...CheckoutFragment
       }