ExceptionThrower: adjust rate limit detection

[glaubinix]

GitHub returns 0 values for API limit headers on GraphQL endpoints in cases where no authentication is provided or the authentication is invalid. Running the following code currently triggers an ApiLimitExceedException because of that. Even though the GitHub API returns a 401 status code with the message This endpoint requires you to be authenticated.

<?php
require 'vendor/autoload.php';
$client = new \Github\Client();
$client->graphql()->execute('query { viewer { organizations(last: 100) { nodes { name } } } }');

[naderman]

Can we get this merged? It's a pretty clear bug and would be helpful to have this on the 2.x branch too.

[acrobat]

Sorry for the delay! Thanks @glaubinix!

[acrobat]

Both 2.19.1 and 3.1.0 were released, containing this fix!

[glaubinix]

No worries. Thank you!