Web workflow skip init when no password, freeing socket. Also reconnect wifi on reload.

[bill88t]

If no password is passed via settings.toml, the wifi connection will occur, but the web workflow will not start at all.
This frees up a (as it turns out, very precious) socket.

Closes #7598

[anecdata]

I think this would close #7598

[bill88t]

I do think so too. Adding it to the first message to have it take effect.

[anecdata]

https://docs.circuitpython.org/en/latest/docs/workflows.html#web will need an update

[bill88t]

Wifi now is auto-connecting on reload.
The web-workflow will not init on a reload, only on boot.
This matches raspberrypi behaviour, treating wifi as always enabled when it's set via settings.toml.

[anecdata]

If I understand correctly, the raspberrypi behavior (wifi connection surviving reload with or without Web Workkflow) will change if MicroPython fixes issue 9505 (and we merge it), but this PR would auto-[re]connect wifi on either port if Web Workflow is enabled.

[tannewt]

Thanks! This will go in for 9.x.

[bill88t]

If I understand correctly, the raspberrypi behavior (wifi connection surviving reload with or without Web Workkflow) will change if MicroPython fixes issue 9505 (and we merge it), but this PR would auto-[re]connect wifi on either port if Web Workflow is enabled.

@anecdata cyw43 is a persistent object we just never reset.
Our implementation is just not bothering disconnecting it, so it persists.
That's all there is to that.
Our picow wifi stuff is all of our own, not really taking any of micropy's work.
I have used them as a reference, but not copied code directly.
So future changes of theirs will not affect us.