[WIP]: Improve how intrinsic sizes work for videos #31746
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Implements improved layout rules for video elements, including aspect ratios and removed poster/src elements. The base for this pr is the patch provided by @jdm in #31416 (comment).
The pr fixes the result of the wpt tests defined in intrinsic_sizes.htm. The relevant natural width/height specification is available at https://html.spec.whatwg.org/multipage/media.html#concept-video-intrinsic-width.
This change depends on #31706, since that fixes the
onloadedmetadata
event firing correctly. This was tested locally using that patch and all the tests pass. However, until that is merged, the 4th test will fail.Needs changes after video autoplay rework in servo/media.
./mach build -d
does not report any errors./mach test-tidy
does not report any errors