MB-51664: Fix bug in parsing/validating shared secret

Change-Id: I6900dc226a81849e9bef0080e9ae617d09da7c63
Reviewed-on: https://review.couchbase.org/c/ns_server/+/224021
Well-Formed: Build Bot <[email protected]>
Reviewed-by: Peter Searby <[email protected]>
Tested-by: Neelima Premsankar <[email protected]>

Author: neelima32

apps/ns_server/src/menelaus_web_jwt.erl

@@ -387,7 +387,7 @@ shared_secret_validators() ->
        fun(Secret, Algorithm) ->
                case menelaus_web_jwt_key:validate_shared_secret(
                       Secret, Algorithm) of
-                   {ok, {SecretBin, JWK}} -> {value, {SecretBin, JWK}};
+                   {ok, {value, SecretBin}} -> {value, SecretBin};
                    {error, Reason} -> {error, Reason}
                end
        end, sharedSecret, signingAlgorithm, _)].