fix: support for :has() pseudo-class in CSS parser (#13779)

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• [X] This PR will fix the issue https://github.com/sveltejs/svelte/issues/13779
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Latest commit: ee1bb1429eee3fd2247e4f866b31bf5532173128

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Hmmm the change is just updating type, not any actual source code. Perhaps you forgot to push @aryanisml?

Thank you for taking a stab at this - I opened #13824 which fixes the issue, so closing in favor of that.