update allfeat testnet chain

Author: SailorSnoW

constants/config.ts

@@ -1016,18 +1016,19 @@ export const chains: Chain[] = [
     threshold: 1000,
   },
   {
-    name: "Harmonie Testnet",
+    name: "Melodie | Allfeat Testnet",
     url: "allfeat-testnet",
-    chainId: "441",
+    chainId: "",
     chainType: "Solochains",
-    rpcUrl: "https://harmonie-endpoint-02.allfeat.io",
+    rpcUrl: "wss://melodie-rpc.allfeat.io",
     nativeCurrency: {
-      name: "HMY",
-      symbol: "HMY",
-      decimals: 18,
+      name: "MEL",
+      symbol: "MEL",
+      decimals: 12,
     },
-    type: "evm",
-    threshold: 100000,
+    prefix: 42,
+    type: "substrate",
+    threshold: 10000,
   },
   {
     name: "Interlay Testnet",