chore: update docs to include scrollWidth/scrollHeight

documentation/docs/03-template-syntax/12-bind.md

@@ -325,6 +325,8 @@ All visible elements have the following readonly bindings, measured with a `Resi
 - [`clientHeight`](https://developer.mozilla.org/en-US/docs/Web/API/Element/clientHeight)
 - [`offsetWidth`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetWidth)
 - [`offsetHeight`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetHeight)
+- [`scrollWidth`](https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollWidth)
+- [`scrollHeight`](https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollHeight)
 - [`contentRect`](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserverEntry/contentRect)
 - [`contentBoxSize`](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserverEntry/contentBoxSize)
 - [`borderBoxSize`](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserverEntry/borderBoxSize)

documentation/docs/07-misc/07-v5-migration-guide.md

@@ -709,7 +709,7 @@ As before, you can disable whitespace trimming by setting the `preserveWhitespac
 Svelte 5 requires a modern browser (in other words, not Internet Explorer) for various reasons:
 
 - it uses [`Proxies`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy)
-- elements with `clientWidth`/`clientHeight`/`offsetWidth`/`offsetHeight` bindings use a [`ResizeObserver`](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver) rather than a convoluted `<iframe>` hack
+- elements with `clientWidth`/`clientHeight`/`offsetWidth`/`offsetHeight`/`scrollWidth`/`scrollHeight` bindings use a [`ResizeObserver`](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver) rather than a convoluted `<iframe>` hack
 - `<input type="range" bind:value={...} />` only uses an `input` event listener, rather than also listening for `change` events as a fallback
 
 The `legacy` compiler option, which generated bulkier but IE-friendly code, no longer exists.