remove immediate flag from isScrollable check

This caused a jest to fail because we tried to access the `filtered` computed array before it was even initialized.

client/src/components/History/HistoryScrollList.vue

@@ -89,9 +89,6 @@ watch(
         if (!scrollable && !allLoaded.value) {
             loadMore();
         }
-    },
-    {
-        immediate: true,
     }
 );