LuiGeeDev

[Datadog](https://app.datadoghq.com/logs?query=service%3Acomento-nuxt%20status%3Aerror%20%22undefined%20is%20not%20an%20object%20evaluating%22&agg_m=count&agg_m_source=base&agg_q=status%2Cservice&agg_q_source=base%2Cbase&agg_t=count&cols=host%2Cservice&fromUser=true&messageDisplay=inline&refresh_mode=sliding&sort_m=%2C&sort_m_source=%2C&sort_t=%2C&storage=hot&stream_sort=time%2Cdesc&top_n=10%2C10&top_o=top%2Ctop&viz=stream&x_missing=true%2Ctrue&from_ts=1727056309320&to_ts=1727661109320&live=true)에서 `undefined is not an object (evaluating 't.dataset.bodyScrollLockIgnore')` 오류가 나는 것을 해결하려는 수정입니다. TextNode 등으로 dataset이 아예 존재하지 않는 el이 있는 것으로 추정되어, HTMLElement인지 확인하고 dataset도 확인합니다