fix: price list when invoice created from timesheet

(cherry picked from commit 39d6df7)

erpnext/projects/doctype/timesheet/timesheet.py

@@ -379,6 +379,9 @@ def make_sales_invoice(source_name, item_code=None, customer=None, currency=None
 	target.project = timesheet.parent_project
 	if customer:
 		target.customer = customer
+		customer_doc = frappe.get_doc("Customer", customer)
+		if customer_doc and customer_doc.default_price_list:
+			target.selling_price_list = customer_doc.default_price_list
 
 	if currency:
 		target.currency = currency