Report Blocked Domain

Reject the retired in-app blocked-domain appeal.

The path is kept rather than deleted because it is unauthenticated -- anything on the internet could be calling it, so a 404 would read as a mistyped URL rather than a withdrawal. Unlike its two live siblings this handler takes no body and carries no rate limit: it raises before doing any work, and a 429 would tell a caller to retry something that will never succeed again.

Raises: HTTPException: Always raised with 410 Gone.