[Bug]: typstyle removes whitespace inside content blocks ([]), changing document output

### What happened?

typstyle appears to delete spaces inside Typst content blocks (`[...]`) in some cases. In some cases this whitespace affects the rendered document.


### Playground link

https://typstyle-rs.github.io/typstyle/playground/?code=MQJwpgDiAUDaAEBqeAXMBnF9hgHYFcBbONTAXQEp5Kg