Investigate why SimplesamlphpAttributeException is getting thrown occasionally.

[ndouglas]

Description

This is one of the errors that wasn't getting to Sentry because of #6334.

Drupal\simplesamlphp_auth\Exception\SimplesamlphpAttributeException: Error in simplesamlphp_auth.module: no valid "adUPN" attribute set. in Drupal\simplesamlphp_auth\Service\SimplesamlphpAuthManager->getAttribute() (line 284 of /var/www/cms/docroot/modules/contrib/simplesamlphp_auth/src/Service/SimplesamlphpAuthManager.php).

Here is an example in Sentry.

Acceptance Criteria

• [ ] The cause of this exception has been investigated.
• [ ] A followup issue has been opened to address the findings, if necessary.

CMS Team

Please leave only the team that will do this work selected. If you're not sure, it's fine to leave both selected.

• [x] Platform CMS Team
• [ ] Sitewide CMS Team

[ndouglas]

Closing this because of #8774.

[TheBoatyMcBoatFace]

Issue not found in Sentry. Reopen if needed 📕