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修复 ui.window 上的回调函数的闭包内引用 dom.window 导致 kraken 销毁时无法释放完整的 DOM 树的问题
修复前创建 - 销毁 Kraken 实例可以看到仍有 Kraken 相关的对象实例存在
修复后增量内存不含 Kraken 对象