https://emqx.atlassian.net/browse/EMQX-8652
Since the rule resource testing mechanism creates a new resource to
test the configuration, a new JWT associated with an unique temporary
resource was being created and left in the JWT table, leaking it.
Also, a wrong case clause when setting the new refresh timer for the
JWT worker was preventing it from refreshing from the 2nd refresh
onward.
Zaiming (Stone) Shi