Deprecation warning from Symfony Console breaks Robo

[rsebboc]

Hello

After upgrading my dependencies, I am getting the following error message after every Robo command (including just robo):
ERROR: Since symfony/console 7.4: The "Symfony\Component\Console\Application::add()" method is deprecated and will be removed in Symfony 8.0, use "Symfony\Component\Console\Application::addCommand()" instead.

It seems to be related to src/Robo.php in registerSingle() method:

         // If the instance is a Symfony Command, register it with
        // the application
        if ($instance instanceof Command) {
            $app->add($instance); // <--- DEPRECATED
            return $instance;
        }

        // Register commands for all of the public methods in the RoboFile.
        $commandFactory = $container->get('commandFactory');
        $commandList = $commandFactory->createCommandsFromClass($instance);
        foreach ($commandList as $command) {
            $app->add($command); // <--- DEPRECATED
        }
        return $instance;

Replacing them with ->addCommand() removes the error message. I am not sure what other impact it could have.

Added #1184