Batching - fix off by one error in light scissoring
Batching - fix off by one error in light scissoring

There have been a couple of reports of pixel lines when using light scissoring. These seem to be an off by one error caused by either rounding or pixel snapping.

This PR adds a single pixel boost to light scissor rects to protect against this. This should make little difference to performance.

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot