Timeout handlers do not execute when the corresponding `abort on X timeout = True` about cylc-flow HOT 2 OPEN

The reason for this is that when the workflow aborts, it terminates processes in the subprocpool INCLUDING the event handler.

Changing this behaviour will require careful thought as it could trigger events we don't want. E.G. preparing tasks may go into the submit-failed state erroneously.

from cylc-flow.

Can we just leverage the cylc stop --now (but not --now --now) code, for the abort shutdown?

stop  -n, --now             Shut down without waiting for active tasks to
                        complete. If this option is specified once, wait for
                        task event handler, job poll/kill to complete. If this
                        option is specified more than once, tell the workflow
                        to terminate immediately.

from cylc-flow.