When you customise the Authentication Guards the collaboration plugin fails to load correctly and continues to show the message "Attempting websocket connection..."

This happens because the POST request to /broadcasting/auth fails with a 403 error.

By updating the channel to be aware of the guards that are defined in the users config file, the user is able to authenticate correctly and the collaboration plugin connection works again.

This example is from the docs for Using an Independent Authentication Guard. If you use a custom guard as this tutorial in the documentation describes then the collaboration plugin doesn't work anymore.

// config/statamic/users.php
 
'guards' => [
    'cp' => 'statamic',
    'web' => 'web',
],

While the default config is to use the web authentication guard

    'guards' => [
        'cp' => 'web',
        'web' => 'web',
    ],

Closes #106