MM-69293: Expect a 401 instead of a 403 after updating auth (#37493)

UpdateUserAuth now revokes all sessions, so we no longer expect a 403 on
ResetSamlAuthDataToEmail, but a 401, since the client has been logged
out.

server/channels/api4/saml_test.go

@@ -70,7 +70,8 @@ func TestSamlResetId(t *testing.T) {
 
 	_, resp, err := th.Client.ResetSamlAuthDataToEmail(context.Background(), false, false, nil)
 	require.Error(t, err)
-	CheckForbiddenStatus(t, resp)
+	// UpdateUserAuth revoked all user's sessions, so this is now unauthorized
+	CheckUnauthorizedStatus(t, resp)
 
 	numAffected, resp, err := th.SystemAdminClient.ResetSamlAuthDataToEmail(context.Background(), false, false, nil)
 	require.NoError(t, err)