Remove invalid PHPDocs param in EventDispatcher interface
Remove invalid PHPDocs param in EventDispatcher interface

As PHPStan is complaining with the following error:

```
ERROR: f789902b337713db08bff827b87b9da81efb035d@param in docblock for Swift_Events_EventDispatcher::createSendEvent (see https://psalm.dev/008)
    /**
     * Create a new SendEvent for $source and $message.
     *
     * @param Swift_Mime_SimpleMessage
     *
     * @return Swift_Events_SendEvent
     */
    public function createSendEvent(Swift_Transport $source, Swift_Mime_SimpleMessage $message);
```
swiftmailer/swiftmailer,michabbb-backup/swiftmailer,swiftmailer/swiftmailer,michabbb-backup/swiftmailer