if input transactions are not all fetched correctly or had a failure,… (#3353)

* if input transactions are not all fetched correctly or had a failure, still parse the transaction correctly instead of skipping it

* handle nullable tx fee

* show warning for BTC txs with missing inputs

---------

Co-authored-by: Serhii <17529954+serhii-bor@users.noreply.github.com>

lib/view_model/dashboard/transaction_list_item.dart

@@ -55,6 +55,12 @@ class TransactionListItem extends ActionListItem with Keyable {
   }
 
   String get formattedTitle {
+
+    if (balanceViewModel.wallet.type == WalletType.bitcoin &&
+        transaction.additionalInfo['hasMissingInputTx'] == true) {
+      return 'Transaction has missing data';
+    }
+
     if (transaction.additionalInfo['autoShield'] == true) {
       return "Autoshield";
     }