Video blocks prefer fixed block_height over responsive aspect ratio

Description

Hi, thanks for maintaining react-notion-x.

I noticed that video blocks can render with a fixed inline height from Notion's
format.block_height even when format.block_aspect_ratio is also available.

This can be hard to notice with a regular 16:9 video, so the Notion test page
below uses a square 1:1 video. In a responsive article layout, a square video is
expected to reserve a square area. If a fixed height such as 320px is applied
instead, the rendered video area can become much shorter than expected and
following content can appear too close to the video.

From react-notion-x@7.10.0, the current asset logic appears to prioritize
block_height for videos:

if (block.type === "video") {
  if (block_height) {
    style.height = block_height
  } else if (block_aspect_ratio) {
    style.paddingBottom = `${block_aspect_ratio * 100}%`
  }
}

I understand this may be intentional to preserve Notion layout fidelity,
especially if users manually resized the video block in Notion. So I am not
sure this should be treated as a bug.

Would you be open to one of these approaches?

1. Prefer block_aspect_ratio over block_height for video blocks when both are
   available.
2. Add an option to render video blocks responsively, while keeping the current
   Notion-fidelity behavior as the default.
3. Document that video block_height is intentionally respected and should be
   overridden by downstream CSS if a responsive layout is desired.

Related context:

• #34 reported an image height mismatch.
• #35 changed image handling so block_height is not applied to images.
• #651 seems related to video rendering more generally, but appears to focus on
  external video sources rather than fixed block_height / responsive aspect
  ratio behavior.

If option 2 sounds acceptable, I would be happy to try a PR with a small opt-in
prop rather than changing the default behavior.

Notion Test Page ID

38f785ff823180ea80cfc415a8d338dc

Public test page:
https://bumpy-aphid-8a3.notion.site/react-notion-x-video-height-test-38f785ff823180ea80cfc415a8d338dc

Start by locating the video asset logic described in the issue and reproduce the behavior with the linked Notion test page, which uses a square video. Compare the effects of block_height and block_aspect_ratio, then confirm the intended behavior with maintainers; done should include an agreed implementation or documentation direction and coverage for the reported case.