f8024a5447
This avoids the race between systemd emitting the `prepare-for-sleep` signal, gnome-shell then starting to write the screen time data to disk, and systemd suspending the hardware. The race isn’t so much of an issue if the suspend succeeds (if gnome-shell loses, the data will still get written out when the machine resumes), but it’s slightly problematic if the machine loses power while suspended, as that means the latest screen time data is lost. Includes significant suggestions from Florian Müllner. Signed-off-by: Philip Withnall <pwithnall@gnome.org> Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3643>