If the unsupported widget has an iFrame version, make it into an <iframe>. If you do that, the IV page will not be generated due to unsupported content, but things will work out of the box if and when we support that widget.

Telegram is likely to support Infogram widgets in the future as checklist says and we have data to get correct <iframe> like with others embeds in ..after-section, not to mark it totally unsupported and not to show this page in future