Enhance scroll restoration documentation for TanStack Query (#9987)

* Enhance scroll restoration documentation for TanStack Query

Explain how TanStack Query improves scroll restoration in SPAs by caching data and preventing UI resets.

* Update docs/framework/react/guides/scroll-restoration.md

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Co-authored-by: Dominik Dorfmeister <[email protected]>

Author: dilmuhammad006

docs/framework/react/guides/scroll-restoration.md

@@ -5,4 +5,6 @@ title: Scroll Restoration
 
 Traditionally, when you navigate to a previously visited page on a web browser, you would find that the page would be scrolled to the exact position where you were before you navigated away from that page. This is called **scroll restoration** and has been in a bit of a regression since web applications have started moving towards client side data fetching. With TanStack Query however, that's no longer the case.
 
+TanStack Query doesn’t implement scroll restoration by itself, but it removes one of the biggest causes of broken restoration in SPA’s: refetch-induced UI resets. By keeping previously fetched data in cache (and optionally using `placeholderData`), navigation back to a page can render instantly with stable layout, making scroll restoration reliable when handled by the router (e.g. React Router’s ScrollRestoration, TanStack Router’s scroll restoration, or a small custom history-based solution).
+
 Out of the box, "scroll restoration" for all queries (including paginated and infinite queries) Just Works™️ in TanStack Query. The reason for this is that query results are cached and able to be retrieved synchronously when a query is rendered. As long as your queries are being cached long enough (the default time is 5 minutes) and have not been garbage collected, scroll restoration will work out of the box all the time.