Fix unnecessary reload on supply page

explorer/src/components/SupplyCard.tsx

@@ -11,7 +11,7 @@ export default function SupplyCard() {
 
   // Fetch supply on load
   React.useEffect(() => {
-    fetchSupply();
+    if (supply === Status.Idle) fetchSupply();
   }, []); // eslint-disable-line react-hooks/exhaustive-deps
 
   if (supply === Status.Disconnected) {

explorer/src/components/TopAccountsCard.tsx

@@ -13,7 +13,7 @@ export default function TopAccountsCard() {
 
   // Fetch on load
   React.useEffect(() => {
-    fetchRichList();
+    if (richList === Status.Idle) fetchRichList();
   }, []); // eslint-disable-line react-hooks/exhaustive-deps
 
   if (richList === Status.Disconnected) {