fix: due date before posting date for items added to cart yesterday (#19681)

diff --git a/erpnext/shopping_cart/cart.py b/erpnext/shopping_cart/cart.py
index 1236ade..813d0dd 100644
--- a/erpnext/shopping_cart/cart.py
+++ b/erpnext/shopping_cart/cart.py
@@ -66,6 +66,7 @@
 
 	from erpnext.selling.doctype.quotation.quotation import _make_sales_order
 	sales_order = frappe.get_doc(_make_sales_order(quotation.name, ignore_permissions=True))
+	sales_order.payment_schedule = []
 
 	if not cint(cart_settings.allow_items_not_in_stock):
 		for item in sales_order.get("items"):