https://wpt.fyi/results/css/css-contain/container-queries/font-relative-units-dynamic.html?label=master&label=experimental&product=chrome&product=firefox&product=safari&aligned&view=interop&q=label%3Ainterop-2023-container
<rdar://problem/106739736>
also: https://wpt.fyi/results/css/css-contain/container-queries/font-relative-calc-dynamic.html?label=master&label=experimental&product=chrome&product=firefox&product=safari&aligned&view=interop&q=label%3Ainterop-2023-container
Pull request: https://github.com/WebKit/WebKit/pull/16992
Committed 267258@main (0b06dbb37578): <https://commits.webkit.org/267258@main> Reviewed commits have been landed. Closing PR #16992 and removing active labels.