panel: show new toplevels as inactive by default (#292)

If the newly created toplevel is the active one, we will get notified explicitly (via the "state" event). However, if a toplevel is opened in the "background", no event will be sent, and we should not show it as active.

Author: dkondor

src/panel/widgets/window-list/toplevel.cpp

@@ -68,6 +68,7 @@ class WayfireToplevel::impl
         button_contents.set_spacing(5);
         button.set_child(button_contents);
         button.set_tooltip_text("none");
+        set_state(0); // will set the appropriate button style
 
         label.set_ellipsize(Pango::EllipsizeMode::END);
         label.set_hexpand(true);