If you had a turret mounted on the soffit above the light on the window side and angled it just right to miss having the light directly in the cam's FOV then you'd probably get the best compromise of window coverage while still covering the main traffic area coming up the deck to the doors. You could block the camera side of the light with tinfoil to minimize blinding it if you couldn't find a good compromise just by aiming and/or adjusting the lens length. One of the 5231R-Z varifocals would be particularly good here- you could tweak the FOV easily.
Best place is between the doors and the light to capture deck traffic though, and have another cam on the other side of the light capturing what goes in that near window, plus the other windows and what happens on that side of the yard. A 2.8 or varifocal zoomed out wouldn't be bad there. Anybody getting in that window will be close enough to get a pood pic of, and anything else happening would be far enough away that you'd basically just know what happened anyway because they'd be too far for a good ID. Plus it'd make a good cam to catch most of the rest of what goes on in the back yard with the kids playing. "Mom, he hit me back first!" or accidents, etc.
If you try for a one-cam solution, run a patch cord out onto the deck, temp screw the turret in, and if you can't get the view the way you like it unscrew it and move it until you've got a good view without the light, soffit, or siding in the picture.