Copying does not copy entire class name

```
change the text to My collection

<h1 color="" class="Heading__Styled..." data-aether-id="aether-heading" data-testid="aether-heading" data-click="">
  New Collection
</h1>
  in Heading (at ..../Heading.tsx:139)
```

See that classnames are trimmed off which can lead to hallucinations by coding agents.