The "Switch type to" node operator is removed and not functioning.
Trying to replace the Mesh Circle node to Curve Circle node using the Shift S command is no option anymore.
Yeah when they changed how they enumerate nodes menu in geometry nodes it broke it in the geometry nodes editor. Now in 4.0 they switched the shader nodes to the new enumeration system. So that operation is no longer available. They do have plans to add it to the core code.
