Replace YITH Wishlist Free with TI WooCommerce Wishlist & Fix Member Sync / WP Rocket Cache Issue

Description: 1. Issue: Current YITH Wishlist Free version doesn't support syncing wishlist data to registered users' account database (wp_usermeta). Members lose their saved list after login or session expire. 2. Action Required: Install and configure TI WooCommerce Wishlist (Free). Enable Guest-to-Register User Sync (ensure logged-in users' favorites are saved permanently in DB). Match the wishlist button style with current site design (Elementor / CSS). Deactivate YITH Wishlist. Add wishlist page URL & AJAX endpoints to WP Rocket Never Cache list, then clear all cache.