fix(shop): use get_address_book facade on cart/store views

Call sites still invoked undefined Shop::get_user_address_book() after
address logic moved to AddressService; route through the existing
get_address_book() facade instead.

src/AKSRT/Shop/Part1.php

@@ -208,7 +208,7 @@ trait Part1 {
             'url'           => get_author_posts_url($author_id),
             'product_count' => $product_count,
             'contact'       => $contact,
-            'addresses'     => $this->get_user_address_book($author_id),
+            'addresses'     => $this->get_address_book($author_id),
         ];
     }
 

src/AKSRT/Shop/Shop.php

@@ -224,7 +224,7 @@ class Shop {
         return [
             'payment_methods' => $this->get_payment_method_options(),
             'shipping_methods' => $this->get_shipping_method_options(),
-            'address_book' => $this->get_user_address_book($user_id),
+            'address_book' => $this->get_address_book($user_id),
             'coupon_enabled' => class_exists('\AKSRT\Payment\Coupon'),
             'currency_symbol' => '¥',
             'pending_orders' => $pending_orders['items'] ?? [],