[Product Bundles] Add support for parent/child relationships between AggregateOrderItems#9777

rachelmcr merged 1 commit intotrunkwoocommerce/woocommerce-ios:trunkfrom

issue/8962-product-bundle-aggregateorderitemwoocommerce/woocommerce-ios:issue/8962-product-bundle-aggregateorderitemCopy head branch name to clipboard