Display icon for "Set As Main Scene" in filesystem popup

editor/filesystem_dock.cpp

@@ -2147,7 +2147,7 @@ void FileSystemDock::_file_and_folders_fill_popup(PopupMenu *p_popup, Vector<Str
 			if (filenames.size() == 1) {
 				p_popup->add_icon_item(get_icon("Load", "EditorIcons"), TTR("Open Scene"), FILE_OPEN);
 				p_popup->add_icon_item(get_icon("CreateNewSceneFrom", "EditorIcons"), TTR("New Inherited Scene"), FILE_INHERIT);
-				p_popup->add_item(TTR("Set As Main Scene"), FILE_MAIN_SCENE);
+				p_popup->add_icon_item(get_icon("PlayScene", "EditorIcons"), TTR("Set As Main Scene"), FILE_MAIN_SCENE);
 			} else {
 				p_popup->add_icon_item(get_icon("Load", "EditorIcons"), TTR("Open Scenes"), FILE_OPEN);
 			}