In JDBC adapter, when generating ROW value expression, generates the ROW keyword only if the dialect allows it

when we use mysql dialect unparse sql,the Mysql dialect does not have a ROW keyword,

but the ROW keyword does exist in SQL

SQL

insert into emps values (1,'Fredkin')

SqlNode.toString(MysqlSqlDialect.DEFAULT)

insert into emps values ROW(1,'Fredkin')

This syntax is problematic in mysql