When an issue is reopened, the action is 'reopen', but the state is 'opened' (as
we don't have a separate 'reopened' state any more).
Because we checked the action in one method and the state in another, this lead
to a weird case where the mesage neither linked to the issue, nor contained an
attachment with its details. Just checking the action is fine, as it's the most
granular.
