LGraphNode.prototype now defines title/type as accessors. Object.assign
uses [[Set]], so assigning a plain object containing those keys onto
nodeType.prototype invoked the inherited setter with `this` bound to the
prototype, which has no _state, and threw a TypeError.
The throw aborted beforeRegisterNodeDef, so none of the node's methods
(onExecuted, onResize, getExtraMenuOptions, onDrawForeground,
onMouseMove, onNodeCreated) were ever installed.
title and type are set by ComfyUI's node registration anyway, so drop
them from the assigned object. The hardcoded title also shadowed the
localized display name.