Bug 1940893 - Select2 customisation: Allow keypress to delete a selected option

        if ((key === KEYS.ENTER || key === KEYS.SPACE ||

            (key === KEYS.DOWN && evt.altKey)) &&

            $(evt.target).hasClass('select2-selection')) {

          var $remove = $(evt.target).closest('.select2-selection__choice__remove');

          if ($remove.length) {

            var $selection = $remove.parent();

            var data = $selection.data('data');

            self.trigger('unselect', {

              originalEvent: evt,

              data: data

            });

          }

          self.open();

          evt.preventDefault();

        }