Trivial change, just move all the code from `BKE_node.h` to `BKE_node.hh` header top. No mixing code from different headers or namespace changes. Part of #117773 Pull Request: https://projects.blender.org/blender/blender/pulls/118407
Trivial change, just move all the code from `BKE_node.h` to `BKE_node.hh` header top. No mixing code from different headers or namespace changes. Part of #117773 Pull Request: https://projects.blender.org/blender/blender/pulls/118407