987003d456
This uses the following accessor methods in more places in more places: `is_group()`, `is_group_input()`, `is_group_output()`, `is_muted()`, `is_frame()` and `is_reroute()`. This results in simpler code and reduces the use of `bNode.type_legacy`. Pull Request: https://projects.blender.org/blender/blender/pulls/132899