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…

The task

When parsing a fully-qualified name like `db.schema.tbl.col`, calling `get_real_name()` on the resulting `Identifier` token returns `'schema'` instead of `'col'`. Similarly, `get_name()` (which falls back to `get_real_name()`) also returns the wrong value.

Part of FineEnvs/repo2rlenv-swe-gen.