Tree的actionList的类型ActionItem能否加一个condition字段

[tky753]

Problem

现在所有Tree节点的action item个数都是统一的，特定节点想要不显示，得要

render: () => {
  if(xxxx) return h('span');
  return h(......);
}

能不能把if(xxxx)这个条件单拎出来呢？
比如，ActionItem 加一个 condition: (record: any) => bool

[anncwb]

export interface ActionItem {
  render: (record: Recordable) => any;
  show?: boolean | ((record: Recordable) => boolean);
}