feat(desktop): shorten the layer fade-in animation

Give layer surfaces their own near-instant fade-in (layersIn and
fadeLayersIn), so the launcher and other overlays appear quicker than
the windows they sit over.

modules/desktop/hyprland/hyprland.nix

@@ -98,6 +98,9 @@ in
           animation = [
             "windows, 1, 3, ease"
             "fade, 1, 3, ease"
+            # Layer surfaces like the launcher appear near-instantly.
+            "layersIn, 1, 1, ease"
+            "fadeLayersIn, 1, 1, ease"
             "workspaces, 1, 3, ease"
             "border, 1, 3, ease"
           ];