They aren’t redirected. They travel in a strait line. It’s the space that is warped and the light curves with the space.

In fact, the escape velocity of any gravity well is dictated by the mass of that first body, not the second, because it’s a function of warped space. That’s true whether it’s the Earth, the Sun or a black hole. And the second body, whether it has the mass of a moon or a massless photon, isn’t a factor.

Dark Matter and Dark Energy are called “dark” for two reasons, they are both not directly observable and are poorly understood. So it’s apropos. But electromagnetic energy (EM), light and photons are neither dark nor misunderstood. There are full quantum particle and wave and field descriptions for them.