Fix Telegram::runCommands for User and nested calls

[noplanman]

Fix running custom commands via Telegram::runCommands.
Fixes #1214

e.g.

// ParentCommand.php
public function execute(): ServerResponse
{
    $responses = $this->getTelegram()->runCommands(['/child with params']);

    // Do other stuff...

    return Request::emptyResponse();
}

// ChildCommand.php
public function execute(): ServerResponse
{
    // Do more stuff here...

    return Request::emptyResponse();
}