AAP-37017 Fix how we build AuthExceptions

[john-westcott-iv]

The AuthException class from social_core.exceptions takes a first parameter of a backend and a second of a message. Since we only had one parameter when we constructed our AuthException, printing it may be black:

In [6]: from social_core.exceptions import AuthException
In [7]: try:
   ...:     raise AuthException(None, 'Testing')
   ...: except AuthException as e:
   ...:     print(f'AuthException: {e}')
   ...: 
AuthException: Testing

In [8]: try:
   ...:     raise AuthException('Testing')
   ...: except AuthException as e:
   ...:     print(f'AuthException: {e}')
   ...: 
AuthException: 

This PR fixes this by passing in None as the first backend parameter to the AuthException.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

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