Verify error reporting from the CI-weekly run (#6060)

Intentionally fail one tests to verify error report from CI-weekly workflow.

Related to #6037

dev_tools/notebooks/isolated_notebook_test.py

@@ -228,6 +228,9 @@ def test_all_notebooks_against_released_cirq(partition, notebook_path, cloned_en
     See `test_changed_notebooks_against_released_cirq` for more details on
     notebooks execution.
     """
+    # TODO(#6037,pavoljuhas) - remove after confirming we get error reports from the CI
+    if notebook_path.endswith('/circuits.ipynb'):
+        assert False, 'intentional failure to simulate CI-weekly run with failed test'
     _rewrite_and_run_notebook(notebook_path, cloned_env)