Support chunked transfers in wget

[relic-se]

Chunked transfers are already supported within adafruit_requests but the content-length check within adafruit_portalbase.network.NetworkBase.wget (see below) prevents them from working because they leave that header omitted. (see https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Transfer-Encoding#chunked for reference)

Adafruit_CircuitPython_PortalBase/adafruit_portalbase/network.py

Lines 336 to 339 in 25fc43d

	if "content-length" in headers:
	content_length = int(headers["content-length"])
	else:
	raise RuntimeError("Content-Length missing from headers")

This update extends wget to allow chunked transfers.

I've provided a simple demonstration using the Adafruit Fruit Jam to download the source files zipball from a GitHub repository which uses chunked transfer encoding.

# Adafruit CircuitPython 10.0.3 on 2025-10-17; Adafruit Fruit Jam with rp2350b
import adafruit_fruitjam
fj = adafruit_fruitjam.FruitJam()
fj.network.connect()
fj.network.wget("https://api.github.com/repos/adafruit/Adafruit_CircuitPython_PortalBase/zipball/3.4.2", "/test.zip")

Connecting to AP ...
Fetching stream from https://api.github.com/repos/adafruit/Adafruit_CircuitPython_PortalBase/zipball/3.4.2
Reply is OK!
Saving data to  /sd/test.zip
...................Created file of 52446 bytes in 0.7 seconds

I've provided more information in my investigation here: relic-se/Fruit_Jam_Library#12.

This update also includes compatibility fixes for adafruit_display_text version 3.4.0 related to outlined labels. (https://github.com/adafruit/Adafruit_CircuitPython_Display_Text/releases/tag/3.4.0)

[FoamyGuy]

I merged main to this branch and it resolves the outlined label conflict maintaining compatibility.

These changes look good to me. I tested with a Fruit Jam and a local Flask server that has both streaming and non-streaming response endpoints and both seem to work as expected.

[relic-se]

@FoamyGuy Thank you for putting in the effort to test these changes properly. 💯