feat(FontVirtualList): move logic related to loading next batch of fonts to the FontVirtualContainer

src/widgets/SampleList/ui/SampleList/SampleList.svelte

@@ -24,38 +24,6 @@ let innerHeight = $state(0);
 // Is the component above the middle of the viewport?
 let isAboveMiddle = $state(false);
 
-const isLoading = $derived(
-    unifiedFontStore.isFetching || unifiedFontStore.isLoading,
-);
-
-/**
- * Load more fonts by moving to the next page
- */
-function loadMore() {
-    if (
-        !unifiedFontStore.pagination.hasMore
-        || unifiedFontStore.isFetching
-    ) {
-        return;
-    }
-    unifiedFontStore.nextPage();
-}
-
-/**
- * Handle scroll near bottom - auto-load next page
- *
- * Triggered by VirtualList when the user scrolls within 5 items of the end
- * of the loaded items. Only fetches if there are more pages available.
- */
-function handleNearBottom(_lastVisibleIndex: number) {
-    const { hasMore } = unifiedFontStore.pagination;
-
-    // VirtualList already checks if we're near the bottom of loaded items
-    if (hasMore && !unifiedFontStore.isFetching) {
-        loadMore();
-    }
-}
-
 /**
  * Calculate display range for pagination info
  */
@@ -83,13 +51,9 @@ const checkPosition = throttle(() => {
 
 <div bind:this={wrapper}>
     <FontVirtualList
-        items={unifiedFontStore.fonts}
-        total={unifiedFontStore.pagination.total}
-        onNearBottom={handleNearBottom}
         itemHeight={220}
         useWindowScroll={true}
         weight={controlManager.weight}
-        {isLoading}
     >
         {#snippet children({
     item: font,