friends' messages are not being highlighted

[bretonium]

Steps to reproduce:

1. Add someone to friends
   • this can be done, for example, via the "friends" tab in the lower-right part of the screen by typing their name
   • or by clicking on the player in the "info" tab in the player list
   • or via the add_friend command in the console
2. Get the friend to write something in the chat

Expected: the friend's messages is highlighted
Observed: the friend's message is not highlighted unless they are in the spectators

The issue is not exclusive to infclass-client, ddnet and teeworlds clients also suffer from this. But infclass-client looks like an easy place to start fixing it. I think the issue happens because the class of players is communicated via the "Clan" field, and it seems to be participating in the friend-matching.

The issue affects not only highlighting of the messages; it also affects the "Only show chat messages from friends" option in the client, rendering it useless.

[bretonium]

turns out, there is cl_friends_ignore_clan option, and it is set to 0 for me in settings_ddnet.cfg. I do not remember setting it, and cannot find a corresponding checkbox for it in the ui. Welp, the problem is solved for me. Maybe infclass-client could expose this option in the ui.