Migrate to Svelte 4

src/lib/components/LoadMoreComponent.svelte

@@ -18,7 +18,9 @@
   $: disabled = !moreAvailable || isLoading;
   $: title = moreAvailable ? 'Load More' : 'There be dragons!';
 
-  const dispatch = createEventDispatcher();
+  const dispatch = createEventDispatcher<{
+    loadOlderPosts: string;
+  }>();
 
   function loadOlderPosts() {
     dispatch('loadOlderPosts');