[ADD] account: change account.bank.statement.line model's order

-github issue: https://github.com/odoo/odoo/pull/27366#issuecomment-426259476

addons/account/models/account_bank_statement.py

@@ -281,7 +281,7 @@ class AccountBankStatement(models.Model):
 class AccountBankStatementLine(models.Model):
     _name = "account.bank.statement.line"
     _description = "Bank Statement Line"
-    _order = "statement_id desc, date desc, sequence, id desc"
+    _order = "statement_id desc, date, sequence, id desc"
 
     name = fields.Char(string='Label', required=True)
     date = fields.Date(required=True, default=lambda self: self._context.get('date', fields.Date.context_today(self)))