fix: multiple checkout and settings fixes

1. Remove wishlist setting from customer settings (now in module toggle)
   - Removed from CustomerSettingsProvider.php
   - Removed from Customers.tsx

2. Remove auto-login from REST API (causes cookie issues)
   - Auto-login in REST context doesn't properly set browser cookies
   - Removed wp_set_current_user/wp_set_auth_cookie calls

3. Fix cart not clearing after order
   - Added WC()->cart->empty_cart() after successful order
   - Server-side cart was not being cleared, causing re-population
   - Frontend clears local store but Cart page syncs with server

admin-spa/src/routes/Settings/Customers.tsx

@@ -13,7 +13,6 @@ import { formatMoney, getStoreCurrency } from '@/lib/currency';
 interface CustomerSettings {
   auto_register_members: boolean;
   multiple_addresses_enabled: boolean;
-  wishlist_enabled: boolean;
   vip_min_spent: number;
   vip_min_orders: number;
   vip_timeframe: 'all' | '30' | '90' | '365';
@@ -25,7 +24,6 @@ export default function CustomersSettings() {
   const [settings, setSettings] = useState<CustomerSettings>({
     auto_register_members: false,
     multiple_addresses_enabled: true,
-    wishlist_enabled: true,
     vip_min_spent: 1000,
     vip_min_orders: 10,
     vip_timeframe: 'all',
@@ -131,7 +129,7 @@ export default function CustomersSettings() {
             checked={settings.auto_register_members}
             onCheckedChange={(checked) => setSettings({ ...settings, auto_register_members: checked })}
           />
-          
+
           <ToggleField
             id="multiple_addresses_enabled"
             label={__('Enable multiple saved addresses')}
@@ -139,14 +137,8 @@ export default function CustomersSettings() {
             checked={settings.multiple_addresses_enabled}
             onCheckedChange={(checked) => setSettings({ ...settings, multiple_addresses_enabled: checked })}
           />
-          
-          <ToggleField
-            id="wishlist_enabled"
-            label={__('Enable wishlist')}
-            description={__('Allow customers to save products to their wishlist for later purchase. Customers can add products to wishlist from product cards and manage them in their account.')}
-            checked={settings.wishlist_enabled}
-            onCheckedChange={(checked) => setSettings({ ...settings, wishlist_enabled: checked })}
-          />
+
+
         </div>
       </SettingsCard>