elm/genlist: unset callbacks flag when destroying view object in unrealize

Summary:
failing to unset this prevents callbacks from being re-added when the item
is next realized, resulting in items which cannot be interacted with

ref T7292

Reviewers: SanghyeonLee

Reviewed By: SanghyeonLee

Subscribers: cedric, #reviewers, #committers

Tags: #efl_widgets

Maniphest Tasks: T7292

Differential Revision: https://phab.enlightenment.org/D6832

src/lib/elementary/elm_genlist.c

@@ -5286,6 +5286,7 @@ _item_unrealize(Elm_Gen_Item *it)
    if (!_item_cache_add(it, _content_cache_add(it, &cache)))
      {
         ELM_SAFE_FREE(VIEW(it), efl_del);
+        it->callbacks = EINA_FALSE;
         ELM_SAFE_FREE(it->spacer, evas_object_del);
         EINA_LIST_FREE(cache, c)
           {