Generate pills from display names

[HarHarLinks]

Your use case

What would you like to do?

Pills are generated from valid <a href="matrix.to/...">label</a> markup with a matrix.to link that points to a user or room.
On web, the labels of these pills are generated by element to show the current displayname of the target entity.
Sending a custom html message and viewing on android, it seems that the provided label is used.

Please decide to adopt web's behaviour.

Why would you like to do it?

parity

How would you like to achieve it?

/

Have you considered any alternatives?

If not adopt, decide on another common behaviour. I'm not sure but maybe this should even be spec'd.

Additional context

related #1046 seems to be obsolete

[HarHarLinks]

Related: formatted_body containing a pill followed by a .like <a href=\"https://matrix.to/#/@me:server.tld\">@me:server.tld</a>. renders the period as a link even though it is clearly not in the anchor tag.

[HarHarLinks]

It seems to mostly do that, but only with users that are in the room. If it linkifies them at all, then I think it should work for all pill-<a>?