Socket inspection helps with debugging a geometry node group. Now, when hovering over a socket, a tooltip will appear that provides information about the data in the socket. Note, socket inspection only works for sockets that have been computed already. Nodes that are not connected to an output are not computed. Future improvements can include ui changes to make the tooltip look more like in the original design (T85251). Furthermore, additional information could be shown if necessary. Differential Revision: https://developer.blender.org/D11842