"notion-yt-playbtn" style is missing

Description

When using next.js and react-notion-x to display a YouTube video embedded in Notion on a webpage, the notion-yt-playbtn class style's background-image is not showing up, even after changing it from:

background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 68 48"><path d="M66.52 7.74c-.78-2.93-2.49-5.41-5.42-6.19C55.79.13 34 0 34 0S12.21.13 6.9 1.55c-2.93.78-4.63 3.26-5.42 6.19C.06 13.05 0 24 0 24s.06 10.95 1.48 16.26c.78 2.93 2.49 5.41 5.42 6.19C12.21 47.87 34 48 34 48s21.79-.13 27.1-1.55c2.93-.78 4.64-3.26 5.42-6.19C67.94 34.95 68 24 68 24s-.06-10.95-1.48-16.26z" fill="red"/><path d="M45 24 27 14v20" fill="white"/></svg>');

to:

background-image: url(/_next/static/media/.4700e869.svg);

I have updated react-notion-x to the latest version and checked the svg configuration in next.config.js, but it's still not working. When I directly insert the svg in notion page, it displays correctly. However, the YouTube play icon disappears.

Please help with this issue.

Start by reproducing the missing notion-yt-playbtn background image in the Next.js and react-notion-x setup, then inspect the generated CSS and the SVG configuration in next.config.js. Compare the working inline SVG with the background-image URL and confirm that the YouTube play icon renders correctly when the issue is fixed.