ANG-6861: After call setDisable(false), an accordion doesn't open when i...

...t was disabled by setDisable(true) from open status.

Related with ANG-6861, accordion will not close after calling setOpen(true) follow previous bug fix.
So, handle active property when open property is changed.

DCO-1.1-Signed-Off-By: Jungchae Kim <jungchae.kim@lge.com>