Localize unnamed project name in editor window title

(cherry picked from commit 35d087813981d05a699221f6bc7e5c72fc55c665)

editor/editor_node.cpp

@@ -363,7 +363,7 @@ void EditorNode::_version_control_menu_option(int p_idx) {
 
 void EditorNode::_update_title() {
 	const String appname = ProjectSettings::get_singleton()->get("application/config/name");
-	String title = (appname.empty() ? "Unnamed Project" : appname) + String(" - ") + VERSION_NAME;
+	String title = (appname.empty() ? TTR("Unnamed Project") : appname) + String(" - ") + VERSION_NAME;
 	const String edited = editor_data.get_edited_scene_root() ? editor_data.get_edited_scene_root()->get_filename() : String();
 	if (!edited.empty()) {
 		// Display the edited scene name before the program name so that it can be seen in the OS task bar.