fu-main: Make it clearer what lost name is and bump it to warning

This happens often enough when people switch from snap to distro
package that we should mention it in non-verbose logs.

Fixes: #2112

src/fu-main.c

@@ -1493,7 +1493,7 @@ fu_main_on_name_lost_cb (GDBusConnection *connection,
 			 gpointer user_data)
 {
 	FuMainPrivate *priv = (FuMainPrivate *) user_data;
-	g_debug ("FuMain: lost name: %s", name);
+	g_warning ("another service has claimed the dbus name %s", name);
 	g_main_loop_quit (priv->loop);
 }