Strip <figure><figcaption> completely.

[pfefferle]

Pitch

Because Mastodon does not support inline images, a federated

<figure>
    <img src="..." />
    <figcaption>Image Description</figcaption>
</figure>

will only show the (then context-less) Image-Caption.

It would be helpfull to remove the <figure> element completely to prevent such artefacts.

Motivation

There are platforms that support inline images (like friendi.ca for example), so it would be helpful if the platforms (like Mastodon) that do not support it, will strip the unsupported (media) elements completely instead of transforming them to <p></p>.