js: Use templates for non-translatable strings

This reverts commit 9d941f8202 and replaces all additional
instances of .format() that have been added since.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2160>

js/ui/accessDialog.js

@@ -140,7 +140,7 @@ var AccessDialogDBus = class {
         let [handle, appId, parentWindow_, title, description, body, options] = params;
         // We probably want to use parentWindow and global.display.focus_window
         // for this check in the future
-        if (appId && '%s.desktop'.format(appId) != this._windowTracker.focus_app.id) {
+        if (appId && `${appId}.desktop` !== this._windowTracker.focus_app.id) {
             invocation.return_error_literal(Gio.DBusError,
                                             Gio.DBusError.ACCESS_DENIED,
                                             'Only the focused app is allowed to show a system access dialog');