Backport !1752 “Resolve "Combine multiple search-file transactions in gs_plugin_packagekit_refine_async()"” to gnome-44
Trivial backport of !1752 (merged) to gnome-44
. This also includes !1704 (merged), which I needed for testing on my system with my version of GTK. We probably should have backported !1704 (merged) earlier anyway.