Error when Dynflow::Action::Timeouts::Timeout happens after action is completed already

[jeremylenz]

ERROR -- /parallel-executor-core: no manager for Dynflow::Director::Event[request_id: e8842967-abe0-46cf-aa2e-0aa98eaa0145-14, execution_plan_id: 9a83e650-8ff1-4a71-86f9-275e30d7037c, step_id: 2, event: Dynflow::Action::Timeouts::Timeout, result: #<Concurrent::Promises::ResolvableFuture:0x000000000ed17b40 pending>] (Dynflow::Error)

See https://projects.theforeman.org/issues/31853

See https://github.com/Katello/katello/blob/090f510fe091c2539c5f83e65e802c8cd9d5e7c5/app/lib/actions/katello/agent_action.rb#L46

When the time runs out, an event is sent to the action. If the action finishes in the mean time, this error gets logged because dynflow tries delivering an event to an execution plan that is not running anymore.

Dynflow should have a way to handle this, perhaps

1. provide a way to ignore certain events and avoid throwing errors
2. make Timeouts cancellable in some way