fix: invalid @supports statement

[johnjenkins]

Description

Change Type

• Fix
• Feature
• Refactor
• Breaking Change
• Documentation
• Other (CI, chores, etc.)

Rationale / Problems Fixed

Fixes #1513

Tests or Reproductions

Repro mentioned in #1513

I ran locally to check it now correctly parses:

const { transform } = require('lightningcss');
const fs = require('fs');
const code = fs.readFileSync('/file-to/ionicons/src/components/icon/icon.css');
try {
  transform({ filename: 'icon.css', code });
  console.log('OK: parsed successfully');
} catch (e) {
  console.error('FAIL:', e.message);
  process.exit(1);
}

If you'd like a test committed, lemme know :)

Screenshots / Media

Platforms Affected

• Android
• iOS
• Web

Notes / Comments