[xflow2.0] 更新画布时（ update(id,data) ），data中含有 undefined，报错：Unexpected token u in JSON at position 0

[Jeff]

Describe the bug

使用 useGraphStore() 提供的 updateNode 方法更新节点数据，data 参数中含有 { value: undefined } 类似的属性值，出现错误；
报错信息如下：

Uncaught SyntaxError: Unexpected token u in JSON at position 0
    at JSON.parse (<anonymous>)
    at a (<anonymous>:8:17)
    at <anonymous>:33:25
    at Array.forEach (<anonymous>)
    at a (<anonymous>:28:26)
    at <anonymous>:33:25
    at Array.forEach (<anonymous>)
    at a (<anonymous>:28:26)
    at <anonymous>:1:1

Your Example Website or App

示例在步骤中提供

Steps to Reproduce the Bug or Issue

1. 调用 updateNode 方法，进入到 @antv/xflow/src/util/object.ts 中的 function apply(target: any, patchItem: any): any 方法;
2. 单独测试 apply ，出现 **Uncaught SyntaxError: Unexpected token u in JSON at position 0**

function apply(target: any, patchItem: any): any {
  /**
   * If the patch is anything other than an object,
   * the result will always be to replace
   * the entire target with the entire patch.
   */
  if (typeof patchItem !== "object" || Array.isArray(patchItem) || !patchItem) {
    return JSON.parse(JSON.stringify(patchItem)); //return new instance of variable
  }

  if (
    typeof patchItem === "object" &&
    patchItem.toJSON !== undefined &&
    typeof patchItem.toJSON === "function"
  ) {
    return patchItem.toJSON();
  }
  /** Also, it is not possible to
   * patch part of a target that is not an object,
   * such as to replace just some of the values in an array.
   */
  let targetResult = target;
  if (typeof target !== "object") {
    //Target is empty/not an object, so basically becomes patch, minus any null valued sections (becomes {} + patch)
    targetResult = { ...patchItem };
  }

  Object.keys(patchItem).forEach((k) => {
    if (!targetResult.hasOwnProperty(k)) targetResult[k] = patchItem[k]; //This ensure the key exists and TS can't throw a wobbly over an undefined key
    if (patchItem[k] === null) {
      delete targetResult[k];
    } else {
      targetResult[k] = apply(targetResult[k], patchItem[k]);
    }
  });
  return targetResult;
}

apply({}, { data: undefined });

Expected behavior

方法中仅对 null 的情形进行了 delete targetResult[k];，忽略了 undefined 的情形；
期望：对 undefined 进行处理

Screenshots or Videos

No response

Platform

• Browser: Chrome

Additional context

No response

[xflow-bot]

👋 @jeff-nm

Thanks for opening your first issue here! If you're reporting a 🐞 bug, please make sure you include steps to reproduce it.

To help make it easier for us to investigate your issue, please follow the contributing guidelines.

We get a lot of issues on this repo, so please be patient and we will get back to you as soon as we can.

[vector]

更新到 2.0.4.