fmt(svelte): formatter error on dynamic style in svelte

Version: Deno 2.1.1

```svelte
<script lang="ts">
  const { color }: { color: string | null } = $props();
</script>

<div
  style="background-color: {color || 'blueviolet'};"
>
</div>
```
```txt
deno fmt --unstable-component
Error formatting: C:\temp\deno-init\test.svelte
   syntax error at line 6, col 28: expect token `<ident>`, but found `{`
Checked 4 files
```