fix: Website Items with same Item name unhandled, thumbnails missing

- Use naming series for Website Item. There could be two items with same name and different item code
- Fix: Website Item Page view breaks if cart is disabled
- Fix: thumbnails not created for Website Items after patch
- Fix: ‘Request for Quote’ button & cart summary not visible if checkout is disabled
diff --git a/erpnext/templates/pages/cart.html b/erpnext/templates/pages/cart.html
index c776ae4..6eb7e6a 100644
--- a/erpnext/templates/pages/cart.html
+++ b/erpnext/templates/pages/cart.html
@@ -101,11 +101,9 @@
 					</div>
 				{% endif %}
 
-				{% if cart_settings.enable_checkout %}
-					<div class="mb-3 frappe-card p-5 payment-summary">
-						{% include "templates/includes/cart/cart_payment_summary.html" %}
-					</div>
-				{% endif %}
+				<div class="mb-3 frappe-card p-5 payment-summary">
+					{% include "templates/includes/cart/cart_payment_summary.html" %}
+				</div>
 
 				{% include "templates/includes/cart/cart_address.html" %}
 			</div>