If the user only belongs to one org team and the org is private, leaving the org team will redirect to `ctx.Org.OrgLink + "/teams/"` which is inaccessible. So we need to check whether the user still belongs to the org.
If the user only belongs to one org team and the org is private, leaving the org team will redirect to `ctx.Org.OrgLink + "/teams/"` which is inaccessible. So we need to check whether the user still belongs to the org.