Fix electrum unspent coins error (#1912)

* Refresh unspent coins before creating a transaction

* disable seed verification in debug mode [skip ci]

lib/src/screens/seed/seed_verification/seed_verification_page.dart

@@ -20,7 +20,8 @@ class SeedVerificationPage extends BasePage {
       builder: (context) {
         return Padding(
           padding: const EdgeInsets.all(16.0),
-          child: walletSeedViewModel.isVerificationComplete
+          child: walletSeedViewModel.isVerificationComplete ||
+                  walletSeedViewModel.verificationIndices.isEmpty
               ? SeedVerificationSuccessView(
                   imageColor: titleColor(context),
                 )

lib/utils/feature_flag.dart

@@ -1,7 +1,9 @@
+import 'package:flutter/foundation.dart';
+
 class FeatureFlag {
   static const bool isCakePayEnabled = false;
   static const bool isExolixEnabled = true;
   static const bool isInAppTorEnabled = false;
   static const bool isBackgroundSyncEnabled = false;
-  static const int verificationWordsCount = 2;
+  static const int verificationWordsCount = kDebugMode ? 0 : 2;
 }

lib/view_model/wallet_seed_view_model.dart

@@ -29,6 +29,7 @@ abstract class WalletSeedViewModelBase with Store {
   List<String> get seedSplit => seed.split(RegExp(r'\s+'));
 
   int get columnCount => seedSplit.length <= 16 ? 2 : 3;
+
   double get columnAspectRatio => seedSplit.length <= 16 ? 1.8 : 2.8;
 
   /// The indices of the seed to be verified.
@@ -60,8 +61,10 @@ abstract class WalletSeedViewModelBase with Store {
   bool isVerificationComplete = false;
 
   void setupSeedVerification() {
-    generateRandomIndices();
-    generateOptions();
+    if (verificationWordCount != 0) {
+      generateRandomIndices();
+      generateOptions();
+    }
   }
 
   /// Generate the indices of the seeds to be verified.