
On Wayland, the display server is the Wayland compositor, i.e. `gnome-shell` itself. As a result, we cannot spawn `gnome-shell-perf-helper` before `gnome-shell` is started, as `gnome-shell-perf-helper` needs to connect to the display server. So, instead of spawning `gnome-shell-perf-helper` from the perf tool, start it from `gnome-shell` itself. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/941