实现JSON部分更新

题目说明

编写 function solution(target, patch)。输入输出均为 JSON 值，不要修改输入数组或对象。不支持外部库、网络访问及异步函数。 target and patch are JSON values. A nonobject patch (including null and arrays) replaces the entire target. For an object patch, start with {} if target is not an object. Delete keys whose patch value is null; recursively apply all other keys. Replace arrays wholesale. Preserve input and treat '__proto__' and 'constructor' as ordinary data keys. Maximum depth 20. 输入范围：每个输入数组最多50,000项，每个字符串最多1,000个字符。数字必须有限，整数及整数累计结果在JavaScript安全整数范围内。其他类型和有效性遵循上述规则。

输入输出示例

[
  {
    "a": 1,
    "b": 2
  },
  {
    "a": null,
    "c": 3
  }
]

{
  "b": 2,
  "c": 3
}

[
  {
    "nested": {
      "a": 1,
      "b": 2
    }
  },
  {
    "nested": {
      "a": 3
    }
  }
]

{
  "nested": {
    "a": 3,
    "b": 2
  }
}

[
  {
    "a": true
  },
  {
    "a": false
  }
]

{
  "a": false
}