Revoking access to role-granted channel then re-gaining access makes the client think there's unread messages

Always shows unread indicator when getting the role back.

1. Be granted a role that gives you access to a channel
2. Get removed from that role
3. Be granted the role again
4. Notice how the channel shows as having unread messages

Note: you can even mark the channel as read and then repeat the process again to get the same result

canary build 586 (96d2f9a), Electron 41.2.2, Windows 11 10.0.26200 (x64), desktop canary 0.0.122, locale en-GB canary build 586 (96d2f9a), Chrome 147.0.0.0, Windows NT 10.0 (x64), locale en-US

Expected behaviour The channel should only have an unread indicator if there has been new messages in the channel