explorer: Only show supply page for custom urls (#29273)

only show supply page for custom urls

explorer/src/pages/SupplyPage.tsx

@@ -1,12 +1,14 @@
 import React from "react";
 import { TopAccountsCard } from "components/TopAccountsCard";
 import { SupplyCard } from "components/SupplyCard";
+import { Cluster, useCluster } from "providers/cluster";
 
 export function SupplyPage() {
+  const cluster = useCluster();
   return (
     <div className="container mt-4">
       <SupplyCard />
-      <TopAccountsCard />
+      {cluster.cluster === Cluster.Custom ? <TopAccountsCard /> : null}
     </div>
   );
 }