fix: don't log CONNECT twice when debug

apps/emqx/src/emqx_connection.erl

@@ -550,6 +550,7 @@ handle_msg(
     },
     handle_incoming(Packet, NState);
 handle_msg({incoming, Packet}, State) ->
+    ?TRACE("MQTT", "mqtt_packet_received", #{packet => Packet}),
     handle_incoming(Packet, State);
 handle_msg({outgoing, Packets}, State) ->
     handle_outgoing(Packets, State);
@@ -783,7 +784,6 @@ parse_incoming(Data, Packets, State = #state{parse_state = ParseState}) ->
 
 handle_incoming(Packet, State) when is_record(Packet, mqtt_packet) ->
     ok = inc_incoming_stats(Packet),
-    ?TRACE("MQTT", "mqtt_packet_received", #{packet => Packet}),
     with_channel(handle_in, [Packet], State);
 handle_incoming(FrameError, State) ->
     with_channel(handle_in, [FrameError], State).