nodes or sockets" error rBfe22635bf664 introduced a utility to check for this (but it was always returning true). This wasnt a problem in master (since it is unused there), but in the 2.93 branch, this utility is actually used and the error results in all geometry nodetrees to appear with the "Node group has unidentified nodes or sockets" message (and being unusable). Now return false in has_undefined_nodes_or_sockets if all nodes and sockets have been successfully checked. This commit then needs to end up in the 2.93 branch. Maniphest Tasks: T89851 Differential Revision: https://developer.blender.org/D11911