a5fc4ad57c
We currently consider idle nodes as in use to avoid too fast state changes and thus flickering of the indicator icon. However, the current idle timeout is rather long and arguably confusing for users. Thus switch to only consider running nodes as in use, but delay disabling of the indicator by 500ms. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2854>