test(cron): isolate legacy mocks from PROJECTS_FILE reads (#5379)

tests/test_issue4385_cron_archive_reappears.py

@@ -123,6 +123,7 @@ def test_cron_state_projection_preserves_archived_sidecar(monkeypatch, tmp_path)
         encoding="utf-8",
     )
     monkeypatch.setattr(models, "SESSION_DIR", session_dir)
+    monkeypatch.setattr(models, "_profile_has_user_projects", lambda: False)
     monkeypatch.setattr(models, "ensure_cron_project", lambda **_: "cron-project")
     models.clear_sidecar_metadata_cache()