The linter's project service ignores the generated Relay artifacts,
so the untyped usePreloadedQuery call left viewer as an error type and
triggered no-unsafe-argument/member-access errors. Pass the explicit
query generic like the sibling audit-log page does.
Drop the redundant GraphQLError cast on the revoke error handler since
formatError already accepts the callback's error type.
Signed-off-by: Émile Ré <emile@probo.com>