Handle facebook login page redirects in v3.x

[lozeone]

Ok so, here is the fix I needed to get v3.x working with Facebook.

The issue here is that some facebook urls that are redirecting to the login page and then returning a "invalid parameter" error from FB, Because you cant embed the login page. It a little strange and inconsistent, sometimes they redirect other times they don't.

Ones in this old format tend to work
https://www.facebook.com/permalink.php?story_fbid={post-id}

While the same one using the current format do not.
https://www.facebook.com/*/posts/{post-id}

To fix this I added a pattern for "www.facebook.com/login/*" to the Redirects.php class and get the intended url from the "next" parameter. This resolves the issue for me.

original issue here #415

[lozeone]

I'm working on Drupal integration with this library for the url_embed module and this final PR gets this working with that module.
See: https://www.drupal.org/project/url_embed/issues/3177860#comment-13936596

Can you make a new new 3.x release once this is in so we can update our composer requirement?

Thanks!