modellist: work around filtered item models getting out of sync (#2545)

This fixes an issue with the "Clone" button producing a page of blank settings.

Signed-off-by: Jared Van Bortel <jared@nomic.ai>

gpt4all-chat/modellist.cpp

@@ -980,6 +980,12 @@ void ModelList::updateData(const QString &id, const QVector<QPair<int, QVariant>
         }
     }
     emit dataChanged(createIndex(index, 0), createIndex(index, 0));
+
+    // FIXME(jared): for some reason these don't update correctly when the source model changes, so we explicitly invalidate them
+    m_selectableModels->invalidate();
+    m_installedModels->invalidate();
+    m_downloadableModels->invalidate();
+
     emit userDefaultModelListChanged();
 }