Fix get real name() in sqlparse so that it returns the component after the last dot in a fully-qualified…

Fix get real name() in sqlparse so that it returns the component after the last dot in a fully-qualified…: a task in repo2rlenv-swe-gen (Harbor dataset). When parsing a fully-qualified name like db.schema.tbl.col , calling get real name() on the resulting Identifier token returns 'schema' instead…