f9135cdc86
We currently don't take the session mode's `hasWindows` property into account when deciding whether window screenshots should be allowed. Right now that doesn't matter in practice, because all the ways to bring up the screenshot UI are blocked in those modes anyway. This is about to change though, so take the property into account to prevent an information leak. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2439>