dunst: the menu takes no typed text, so a typed line never becomes a choice

Review of hq issue 360: rofi without -no-custom hands typed text to dunst as if chosen.

modules/dunst/cmd/dunst-tools/manifest_test.go

@@ -47,7 +47,7 @@ func TestTheFileIsTheDecidedOneAndCallsRofi(t *testing.T) {
 	m := readManifest(t)
 	c := m.resource(t, "configuration")["content"].(string)
 	for _, want := range []string{"origin = top-right", "transparency = 0", "corner_radius = 0", "font = Inter ${setting:font-size}",
-		"width = ${setting:width}", "dmenu = rofi -dmenu -p dunst"} {
+		"width = ${setting:width}", "dmenu = rofi -dmenu -no-custom -p dunst"} {
 		if !strings.Contains(c, "    "+want+"\n") {
 			t.Errorf("lacks %q", want)
 		}