This extends the ctrl+F search to also support searching for some socket values. The original motivation for this came from the need to search for a Warning node by its warning (instead of node name or label). However, I found this to be more generally useful as it can also be used to search for places where e.g. certain attribute names are used or where e.g. some object is referenced in an input socket. Pull Request: https://projects.blender.org/blender/blender/pulls/146882