Backport !1772 “gs-screenshot-image: Fix Software becoming unresponsive when downloading screenshots” to gnome-44
requested to merge pwithnall/gnome-software:backport-1772-screenshots-performance-gnome-44 into gnome-44
We now use soup_session_send_and_read_{async,finish} calls which should not block while downloading screenshots.
Closes #2269 (closed)
Trivial backport of !1772 (merged) to gnome-44.