docs: add #1179 to release notes

Author: mdekstrand

docs/releases/2026.rst

@@ -46,6 +46,7 @@ fixed issues and merged PRs is on `milestone 2026.3`_.
 - Certain per-request warnings in batch inference are now aggregated (:issue:`1113`, :pr:`1168`).
 - Added :class:`lenskit.metrics.UniqueItemCount` (:issue:`1005`, :pr:`1169`).
 - Added support for ``interaction="default"`` to :meth:`~lenskit.data.DatasetBuilder.add_relationship_class` (:pr:`1174`).
+- Fix Steam dataset import to properly import interactions (previously was incomplete and broken, :issue:`1176`, :pr:`1179`).
 
 .. _milestone 2026.3: https://github.com/lenskit/lkpy/milestone/28?closed=1