Save opened scenes when necessary

(cherry picked from commit 331f922359a7ec367542262822af47c683a4f734)

editor/editor_node.cpp

@@ -1292,6 +1292,7 @@ void EditorNode::_dialog_action(String p_file) {
 				_save_default_environment();
 				_save_scene_with_preview(p_file, scene_idx);
 				_add_to_recent_scenes(p_file);
+				save_layout();
 
 				if (scene_idx != -1)
 					_discard_changes();
@@ -3999,6 +4000,7 @@ void EditorNode::_load_open_scenes_from_config(Ref<ConfigFile> p_layout, const S
 	for (int i = 0; i < scenes.size(); i++) {
 		load_scene(scenes[i]);
 	}
+	save_layout();
 
 	restoring_scenes = false;
 }

editor/filesystem_dock.cpp

@@ -988,6 +988,7 @@ void FileSystemDock::_try_move_item(const FileOrFolder &p_item, const String &p_
 				for (int j = 0; j < ed->get_edited_scene_count(); j++) {
 					if (ed->get_scene_path(j) == file_changed_paths[i]) {
 						ed->get_edited_scene_root(j)->set_filename(new_item_path);
+						editor->save_layout();
 						break;
 					}
 				}