[bartveneman]

Summary

• Bumps @projectwallace/css-parser from ^0.18.12 to ^0.19.0 (package.json and pnpm-lock.yaml).
• 0.19.0 changes the argument order of the string helpers: str_index_of and str_starts_with now take the lowercase needle first, like str_equals. TypeScript can't flag this because both signatures are (string, string).
• The only affected call site on main is str_index_of(prelude, 'selector(') in format_atrule_prelude, now str_index_of('selector(', prelude). The str_equals calls already used this order.
• Split out of fix: correctly print atrule preludes without regexes #255 to keep that PR focused; fix: correctly print atrule preludes without regexes #255 builds on this change.

Test plan

• vitest run passes (277 passed, 1 skipped)
• tsc clean
• oxlint / oxfmt --check clean

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[github-actions]

📦 Package Bundle Size

No bundle size changes.