The issue here is, the modal for the newsletter is part of the editable area,
and when we click on the 'close' button of that modal, it is destroyed but the
'summer note' tries to bind the events related to the button(because close is a button).
fixed the traceback, to disable invoking 'summer note' events on click of
the 'close' button on modal
task-2075232
X-original-commit: 110ea837903f3e6c67c1d0e0081073edea8852d1