disabling alerts should generate a "disabled" status, not "cleared"

Currently, disabling an alert on an actively broken element causes a "cleared" message to be generated.  This is what you might call "fake news".  What should happen is the alert enters into a disabled state and the message should reflect that.  It is of some value that it does clear since there is currently no other method to reset an accidental ACK, but that is a hack side effect.  It is very annoying to have to explain to customers when this happens that, no, the problem did not really go away, we just toggled alerts off.