added the update property by CODE method in helpers

[maxlyaptsev]

added the update property by CODE method, because the ID is implicit after migration

[andreyryabin]

Максим, есть же такой метод

        $iblockId = $helper->Iblock()->getIblockId('IBLOCK_CODE');

        $helper->Iblock()->updatePropertyIfExists($iblockId,'PROP_CODE', array(
            //...
        ));

[andreyryabin]

или вот так

        $iblockId = $helper->Iblock()->getIblockId('IBLOCK_CODE');
        $propertyId = $helper->Iblock()->getPropertyId($iblockId, 'PROP_CODE');

        $helper->Iblock()->updatePropertyById($propertyId, array(
            //...
        ));