Returns a tuple containing all the package names available on the current registry.

def get_all_package_names(self) -> Iterable[str]:
        """
        Returns a tuple containing all the package names available on the current registry.
        """
        self._validate_set_registry()
        package_ids = self.registry._get_all_package_ids()
        for package_id in package_ids:
            yield self.registry._get_package_name(package_id)