This patch removes the Dot output from the Normal node. This previously
computed negative the dot product of the normalized inputs. We are
removing it because we now have a Vector Math node that can compute the
dot product, and because it output is confusing, considering it computes
the negative of the product and it implicitly normalized the input.
The node was moved to the input category, and might be later extended to
allow normal picking from the scene or normal passes.
Fixed#132770.
Pull Request: https://projects.blender.org/blender/blender/pulls/140599
9e0e76f8ab