Better regex parsing in annotation range

[pomber]

Now, regex in annotation ranges allow escaped [] and ().

So it supports cases like this:

```jsx
// !Fold[/className="([^"]+)"/g]
function Foo() {
  return (
    <div className="bg-red-200 opacity-50">
      <span className="border">hey</span>
    </div>
  )
}
```

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Name	Status	Preview	Comments	Updated (UTC)
codehike.org	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 8, 2025 11:50am

[github-actions]

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