fix(skeleton): include line item children recursively (#3753)

* fix(skeleton): include line item children recursively

Rename local variable shadowing line item children to include children
recursively.

* feat(changeset): add changeset for skeleton changes

Author: martin-pettersson

.changeset/odd-numbers-hug.md

@@ -0,0 +1,7 @@
+---
+'@shopify/cli-hydrogen': patch
+'@shopify/create-hydrogen': patch
+'skeleton': patch
+---
+
+Include line item children recursively in cart.

templates/skeleton/app/components/CartMain.tsx

@@ -23,8 +23,8 @@ function getLineItemChildrenMap(lines: CartLine[]): LineItemChildrenMap {
       children[parentId].push(line);
     }
     if ('lineComponents' in line) {
-      const children = getLineItemChildrenMap(line.lineComponents);
-      for (const [parentId, childIds] of Object.entries(children)) {
+      const lineChildren = getLineItemChildrenMap(line.lineComponents);
+      for (const [parentId, childIds] of Object.entries(lineChildren)) {
         if (!children[parentId]) children[parentId] = [];
         children[parentId].push(...childIds);
       }