Don't trust send works. Do one recv before creating Response

[tannewt]

This allows us to retry with a new socket. This greatly reduces the likelihood of Unable to read HTTP response.

[anecdata]

Initial testing: seems to address the

  File "adafruit_requests.py", line 594, in get
  File "adafruit_requests.py", line 581, in request
  File "adafruit_requests.py", line 119, in __init__
RuntimeError: Unable to read HTTP response.

that has been occurring with every other GET on ESP32-S2 (with chunked responses in this case). I'll keep at it.

[brentru]

Code looks good, tested OK on ESP32SPI socket and ESP32S2 native socket.