Log error when recv proxy info timeout

[terry-xiaoyu]

Before the change:

2023-04-20T14:56:51.671735+08:00 [error] supervisor: 'esockd_connection_sup - <0.2537.0>', errorContext: connection_shutdown, reason: {invalid_proxy_info,<<"f\n">>}, offender: [{pid,<0.3192.0>},{name,connection},{mfargs,{emqx_connection,start_link,[[{listener_id,<<"mqtt:tcp:external">>},{deflate_options,[]},{max_conn_rate,1000},{active_n,100},{zone,external},{proxy_address_header,<<>>},{proxy_port_header,<<>>},{supported_subprotocols,[]}]]}}]

2023-04-20T14:57:01.348275+08:00 [error] supervisor: 'esockd_connection_sup - <0.2537.0>', errorContext: connection_shutdown, reason: {proxy_proto_timeout,5000}, offender: [{pid,<0.3194.0>},{name,connection},{mfargs,{emqx_connection,start_link,[[{listener_id,<<"mqtt:tcp:external">>},{deflate_options,[]},{max_conn_rate,1000},{active_n,100},{zone,external},{proxy_address_header,<<>>},{proxy_port_header,<<>>},{supported_subprotocols,[]}]]}}]

After the change:

2023-04-20T18:07:06.180134+08:00 [error] [esockd_proxy_protocol] The listener 127.0.0.1:8883 is working in proxy protocol mode, but received invalid proxy_protocol header, raw_bytes=<<"f\n">>

2023-04-20T18:10:17.205436+08:00 [error] [esockd_proxy_protocol] The listener 127.0.0.1:8883 is working in proxy protocol mode, but timed out while waiting for proxy_protocol header