Sam Atkins db597843d6 LibWeb/CSS: Correct parsing of @supports selector() ...

A couple of fixes here:
- Parse a `<complex-selector>` instead of a `<selector-list>`
- Don't match if any unknown `::-webkit-*` pseudo-elements are found

2025-03-17 10:00:19 +00:00

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at-supports-font-format-001.html

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at-supports-font-tech-001.html

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at-supports-selector-001.html

LibWeb/CSS: Correct parsing of @supports selector()

2025-03-17 10:00:19 +00:00

at-supports-selector-002.html

LibWeb/CSS: Correct parsing of @supports selector()

2025-03-17 10:00:19 +00:00

at-supports-selector-003.html

LibWeb/CSS: Correct parsing of @supports selector()

2025-03-17 10:00:19 +00:00

at-supports-selector-004.html

LibWeb/CSS: Correct parsing of @supports selector()

2025-03-17 10:00:19 +00:00