klipperscreen: Wifi does not always show up on klipperscreen after reboot

[consp]

Sometimes no channels show up, most likely due to an empty response from iwlist or non-zero exit code or process timeout.

Temporary fix:
Go back, wait a few seconds, enter wifi screen and wait for about 10s.

[consp]

issue is an empty /var/log/iwd, needs a try/catch.

[consp]

This is probably due to iwd not having a populated list of networks in range yet. I guess it's not a bug but a feature since it's not finished scanning.

I also notices that having a ton of networks in range might blind it to your local one.

Maybe not, see #69

[consp]

Probably fixed with #69 see consp/KlipperScreen@bcb160c and 8a30584