docs: Update Breaking changes section (#9444)
* update docs
* Update sites/svelte-5-preview/src/routes/docs/content/03-appendix/02-breaking-changes.md
Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>
* Update sites/svelte-5-preview/src/routes/docs/content/03-appendix/02-breaking-changes.md
* Update sites/svelte-5-preview/src/routes/docs/content/03-appendix/02-breaking-changes.md
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Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>
Co-authored-by: Rich Harris <hello@rich-harris.dev>