fix: Cart buttons not working

- Add cart.js to web bundle
- Hide icon conditionally since now this file loads on every single page
diff --git a/erpnext/public/js/cart.js b/erpnext/public/js/cart.js
index 0c97045..69357ee 100644
--- a/erpnext/public/js/cart.js
+++ b/erpnext/public/js/cart.js
@@ -292,7 +292,9 @@
 });
 
 frappe.ready(function() {
-	$(".cart-icon").hide();
+	if (window.location.pathname === "/cart") {
+		$(".cart-icon").hide();
+	}
 	shopping_cart.parent = $(".cart-container");
 	shopping_cart.bind_events();
 });