fix: set party type & party for gratuity payable row in journal entry

hrms/hr/doctype/full_and_final_statement/full_and_final_statement.py

@@ -205,7 +205,7 @@ def create_journal_entry(self):
 					"debit_in_account_currency": flt(data.amount, precision),
 					"user_remark": data.remark,
 				}
-				if data.reference_document_type == "Expense Claim":
+				if data.reference_document_type in ["Expense Claim", "Gratuity"]:
 					account_dict["party_type"] = "Employee"
 					account_dict["party"] = self.employee