Fix image avatars and naming aliases in the chat component

[cjqian]

Images and names should match the users' avatar/name preferences from registration.

[TiboX2021]

For information: this might caused by the fact that other participants are not refetched after the TOS & profile stage, meaning that their gender & avatar remains null when arriving to chat stages without reloading the page once

[vivtsai]

Hi yes, that's what I was looking at too. I did notice that this issue doesn't always occur, e.g., when I started a chat with 3 participants, one was completely fine; one had some avatars/genders working; and one had all of them (including their own avatar/gender) missing. I'll try and put up a fix sometime today.