524ab5399 widened the media read timeout from send_video to "all upload send
paths" - send_voice/send_audio/send_photo/send_document/send_media_group/
send_animation. Both send_photo calls inside send_image() were missed, so
they still ran on the short timeout the rest of the Bot API is tuned for
while the sibling media paths already pass it.
The missed pair is the worst one to miss: send_image tries a URL send first,
then falls back to downloading the image and uploading the bytes - the path
documented as "supports up to 10MB", i.e. the slowest send in the file and
the one whose server-side processing wait most often outlasts the short
budget. When it times out the handler's last resort posts the bare URL as
text, so the picture silently never arrives as a picture.
Pass _MEDIA_SEND_READ_TIMEOUT on both, covered by two behavioral tests that
drive send_image for real - the URL send and the forced byte-upload fallback
- and assert the read_timeout that actually reaches the Bot API.
Drexuxux