[FL-2717] Fix unexpected behaviour when opening a remote from outside (#1538)

* Fix unexpected behaviour when opening remote from outside
* Same fix for editing button name
* Exit application correctly if remote was deleted
* Remove duplicate function from ibutton
* Use COUNT_OF macro

Co-authored-by: あく <alleteam@gmail.com>

applications/ibutton/scenes/ibutton_scene_save_success.c

@@ -31,8 +31,8 @@ bool ibutton_scene_save_success_on_event(void* context, SceneManagerEvent event)
         if(event.event == iButtonCustomEventBack) {
             const uint32_t possible_scenes[] = {
                 iButtonSceneReadKeyMenu, iButtonSceneSavedKeyMenu, iButtonSceneAddType};
-            ibutton_switch_to_previous_scene_one_of(
-                ibutton, possible_scenes, sizeof(possible_scenes) / sizeof(uint32_t));
+            scene_manager_search_and_switch_to_previous_scene_one_of(
+                ibutton->scene_manager, possible_scenes, COUNT_OF(possible_scenes));
         }
     }