It has been broken for a while, probably since the theme changes?
- Anyway, removed the effort to get the exact mounted size before requesting the image from CDN.
- When it works, it does prevent blurry image in different screen resolutions, but it's hard to maintain and too expensive.
ChannelThumbnail: use 64 to cover both the 64 and 40 case (the cached image will work on both, potentially reducing a call). I think the size is close enough to not trigger a Core Vital size warning.
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