Allow a user to log back in through SSO to unblock their account
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=21751) </details> <!--IssueSummary end--> ### Description It causes internal support churn when users are blocked and must submit a ticket to get reinstated (unblocked). This would be direct parity with GitHub Enterprise which allows suspended users to login back in with SSO enabled to unsuspend their accounts. The benefit of this would be to decrease user confusion and internal support costs when a user is blocked. ### Proposal Automatically allow users that are blocked to log back in through SSO to unblock their account. ### Links / references n/a
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