The master_clock_pin was already optional, but not specifying it would
result in a crash. This fixes it, so it really can be omitted, when the
camera module has its own clock source built in.
I wanted to use the idiom
```c
#if GUARD
if (condition) {
alternate code
} else
#else
{
common default code
}
```
idiom, in which the common default code is conditioned both on a
compile-time check and a run-time check. However, I got it wrong
and uncrustify chipped in, adding extra brackets around a following
piece of code and re-indenting it.
* Set nonblock on all accepted sockets. Not just ones for user code.
* Close an open websocket if another is accepted.
* Set debug level to INFO rather than DEBUG because DEBUG crashes
on ESP32-S3 USB OTG.
A crash would occur if an SSL socket was not shut down before
`gc_deinit()`.
I do not fully understand the root cause, but some object deinitialization
/ deallocation prior to `gc_deinit` leaves the SSL object in an
inconsistent state.
Rather than resolve the root cause, instead ensure that the closing of
the user socket also closes the SSL socket.
Closes: #6502
It doesn't need never reset because the status LED is only active
when user code isn't.
This also fixes PWM never reset on espressif so that deinit will
undo it.
Fixes#6223
Tested with badssl.com:
1. Get client certificates from https://badssl.com/download/
2. Convert public portion with `openssl x509 -in badssl.com-client.pem -out CIRCUITPY/cert.pem`
3. Convert private portion with `openssl rsa -in badssl.com-client.pem -out CIRCUITPY/privkey.pem` and the password `badssl.com`
4. Put wifi settings in CIRCUITPY/.env
5. Run the below Python script:
```py
import os
import wifi
import socketpool
import ssl
import adafruit_requests
TEXT_URL = "https://client.badssl.com/"
wifi.radio.connect(os.getenv('WIFI_SSID'), os.getenv('WIFI_PASSWORD'))
pool = socketpool.SocketPool(wifi.radio)
context = ssl.create_default_context()
requests = adafruit_requests.Session(pool, context)
print(f"Fetching from {TEXT_URL} without certificate (should fail)")
response = requests.get(TEXT_URL)
print(f"{response.status_code=}, should be 400 Bad Request")
input("hit enter to continue\r")
print("Loading client certificate")
context.load_cert_chain("/cert.pem", "privkey.pem")
requests = adafruit_requests.Session(pool, context)
print(f"Fetching from {TEXT_URL} with certificate (should succeed)")
response = requests.get(TEXT_URL)
print(f"{response.status_code=}, should be 200 OK")
```
Note: at this time, the ssl module on pico_w never verifies the server
certificate. This means it does not actually provide a higher security
level than regular socket / http protocols.
