fix: choose the first channel in the server if none is selected

src/components/navigation/left/ServerSidebar.tsx

@@ -62,7 +62,11 @@ const ServerSidebar = observer((props: Props) => {
     if (!server) return <Redirect to="/" />;
 
     const channel = channel_id ? client.channels.get(channel_id) : undefined;
+
+    // The user selected no channel, let's see if there's a channel available
+    if (!channel && server.channel_ids.length > 0) return <Redirect to={`/server/${server_id}/channel/${server.channel_ids[0]}`} />;
     if (channel_id && !channel) return <Redirect to={`/server/${server_id}`} />;
+
     if (channel) useUnreads({ ...props, channel });
 
     useEffect(() => {