Pixelfed "acct" field doesn't contain domain

The acct attribute is supposed to have the domain in it for remote users. https://docs.joinmastodon.org/entities/account/

It's always equal to username it seems.

This is annoying, since we do manual checks to compensate for this, because we need to know if it's from our server for the "from server.tld" text on a post, and because we want to show the full acct value (including remote domain if it is a remote account) on the subtitle of the post activity