Decrement page if empty on Cardlist

If you removed an item from the cardlist so that the page is empty afterwards then, and only then, change the page

Closes PelicanPlatform#1473

web_ui/frontend/components/CardList.tsx

@@ -24,9 +24,11 @@ export function CardList<T>({ data, Card, cardProps }: CardListProps<T>) {
   const PAGE_SIZE = 5;
   const [page, setPage] = useState<number>(1);
 
-  // Reset the page on data length change
+  // Minus the page if the data length changes
   useEffect(() => {
-    setPage(1);
+    if (data?.length && page > Math.ceil(data.length / PAGE_SIZE)) {
+      setPage(Math.max(1, Math.ceil(data.length / PAGE_SIZE)));
+    }
   }, [data?.length]);
 
   const count = useMemo(() => {