Allow editing failure actions without having to detach them first

This is the current workflow when I need to make updates to a failure action:

1. Detach failure action

2. Edit failure action

3. Re-attach failure action

If I'm in the middle of step #2 and the event is triggered, the failure action will *always* fire because it's not attached to a preceding action, i.e., it's temporarily a "regular" action while I'm editing it.

Because I cannot disable/enable event actions, I have to speed through these sorts of changes or do them after normal business hours.