(At least one) P1S doesn't support TLS for MQTT/FTP

The behavior I've observed on my P1S doesn't match what's documented in this repo. For me, both MQTT and FTP are unencrypted, on their usual unencrypted ports (that is, I need to connect to port 1883 for MQTT and 21 for FTP, both with TLS disabled).

```console
$ nc -zv 192.168.x.x 8883
nc: connect to 192.168.x.x port 8883 (tcp) failed: Connection refused
$ nc -zv 192.168.x.x 990
nc: connect to 192.168.x.x port 990 (tcp) failed: Connection refused
$ nc -zv 192.168.x.x 1883
Connection to 192.168.x.x 1883 port [tcp/*] succeeded!
$ nc -zv 192.168.x.x 21
Connection to 192.168.x.x 21 port [tcp/*] succeeded!
$ mosquitto_sub -h 192.168.x.x -p 1883 --insecure -u bblp -P -t 'device/01Pxxxx/report'
{ status messages... }
```

(A bit more detail on how I came to this conclusion [here](https://github.com/ClusterM/open-bambu-networking/issues/9)).

Observed on 01.09.01.00, 01.08.02.00, and 01.07.00.00

Has anyone else seen this behavior? At this point my best theory is I somehow got a device without certs installed. I'm making this ticket mostly so anyone else with the same problem can find it. If this is a common behavior, may be worth adding to the docs here. If not, I guess I'll just call it weird and move on.