KeyError: 'event' When assigning events after a match the var_root accesses invalid key

[mkanoor]

• ansible-events version: 0.4.0
• Python version:3.9.13
• Operating System: MacOS

Description

Get a Key Error when we making an assignment to events after a match.

Trying to run a playbook after an assignment on an event match

condition: events.third << event.i == 2

Tell us what happened, what went wrong, and what you expected to happen.
E KeyError: 'event'
https://github.com/benthomasson/ansible-events/blob/38ba754fa97b2b188b424ed898ce084985544510/ansible_events/builtin.py#L134

What I Did

Ran a playbook as part of assigning a matched event.

Modified tests/test_simple.yml
changed
condition: event.i == 2
to
condition: events.second << event.i == 2

Ran pytest
pytest tests/test_engine.py::test_run_rules_simple

[benthomasson]

I haven't tried the << operator in a single condition yet. I am not sure if that would work. It should throw a better error if it does not.