handlePasswordGrant: insert connectorData into OfflineSession (#2199)

* handlePasswordGrant: insert connectorData into OfflineSession

This change will insert the ConnectorData from the initial Login
into the OfflineSession, as already done in handlePasswordLogin.

Signed-off-by: Henning Surmeier <h.surmeier@mittwald.de>

connector/mock/connectortest.go

@@ -107,6 +107,7 @@ func (p passwordConnector) Login(ctx context.Context, s connector.Scopes, userna
 			Username:      "Kilgore Trout",
 			Email:         "kilgore@kilgore.trout",
 			EmailVerified: true,
+			ConnectorData: []byte(`{"test": "true"}`),
 		}, true, nil
 	}
 	return identity, false, nil