/usr/share/gnome-shell/search-providers/org.gnome.Characters.search-provider.ini is in gnome-characters 3.22.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | [Shell Search Provider]
DesktopId=org.gnome.Characters.desktop
BusName=org.gnome.Characters.BackgroundService
ObjectPath=/org/gnome/Characters/BackgroundService
Version=2
DefaultDisabled=true
|