docs(useInfiniteQuery): add warning about fetchNextPage disrupting default refetch behaviour (#6024)

Author: LeshaTat

docs/react/reference/useInfiniteQuery.md

@@ -68,4 +68,6 @@ The returned properties for `useInfiniteQuery` are identical to the [`useQuery`
   - This will be `true` if there is a previous page to be fetched (known via the `getPreviousPageParam` option).
 - `isRefetching: boolean`
   - Is `true` whenever a background refetch is in-flight, which _does not_ include initial `loading` or fetching of next or previous page
-  - Is the same as `isFetching && !isLoading && !isFetchingNextPage && !isFetchingPreviousPage`
+  - Is the same as `isFetching && !isLoading && !isFetchingNextPage && !isFetchingPreviousPage`
+
+Keep in mind that imperative fetch calls, such as `fetchNextPage`, may interfere with the default refetch behaviour, resulting in outdated data. Make sure to call these functions only in response to user actions, or add conditions like `hasNextPage && !isFetching`.