Don't install the settings_notify_cb from here, since it may be called

Don't install the settings_notify_cb from here, since it may be called

	* gtk/gtkfilechooserdefault.c (gtk_file_chooser_default_style_set):
	Don't install the settings_notify_cb from here, since it
	may be called before the first screen_changed signal,
	confusing the logic in gtk_file_chooser_screen_changed().
	(#148803, Abel Daniel)