fix: strip whitespace in customer_name

(cherry picked from commit e5ba0e6401)

erpnext/selling/doctype/customer/customer.py

@@ -114,6 +114,7 @@ class Customer(TransactionBase):
 			set_name_from_naming_options(frappe.get_meta(self.doctype).autoname, self)
 
 	def get_customer_name(self):
+		self.customer_name = self.customer_name.strip()
 		if frappe.db.get_value("Customer", self.customer_name) and not frappe.flags.in_import:
 			count = frappe.db.sql(
 				"""select ifnull(MAX(CAST(SUBSTRING_INDEX(name, ' ', -1) AS UNSIGNED)), 0) from tabCustomer