I'mma put duct tape on the moon if I plant outdoors this year.
That amount of light will not trigger vegetative growth, cause your plants to herm or make the plant think it's anything but bed time, don't worry.
The light has zero strength behind that plastic and the distance that it would throw usable light, even without the plastic over it, would be inches.
Cover it with electrical tape if it makes you sleep better, but you're fine either way.