Lookup NFTs only if the current wallet is an Ethereum Wallet (#1197)

lib/view_model/dashboard/nft_view_model.dart

@@ -4,6 +4,7 @@ import 'dart:developer';
 
 import 'package:cake_wallet/core/wallet_connect/wc_bottom_sheet_service.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/message_display_widget.dart';
+import 'package:cw_core/wallet_type.dart';
 import 'package:http/http.dart' as http;
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/.secrets.g.dart' as secrets;
@@ -38,6 +39,8 @@ abstract class NFTViewModelBase with Store {
 
   @action
   Future<void> getNFTAssetByWallet() async {
+    if (appStore.wallet!.type != WalletType.ethereum) return;
+
     final walletAddress = appStore.wallet!.walletInfo.address;
     log('Fetching wallet NFTs for $walletAddress');