IOS-7486 Exclude Cardano UTXO with incorrect asset hex name (#814)

BlockchainSdk/Blockchains/Cardano/CardanoTransactionBuilder.swift

@@ -23,7 +23,19 @@ class CardanoTransactionBuilder {
 
 extension CardanoTransactionBuilder {
     func update(outputs: [CardanoUnspentOutput]) {
-        self.outputs = outputs
+        self.outputs = outputs.filter { output in
+            let containsIncorrectAssetNameHex = output.assets.contains(where: { asset in
+                // We have to exclude assets with the incorrect hex name like `000de14064655f76696c6c69657273`
+                // Which fails to meet utf8 standards
+                String(data: Data(hexString: asset.assetNameHex), encoding: .utf8) == nil
+            })
+
+            if containsIncorrectAssetNameHex {
+                Log.debug("CardanoTransactionBuilder will exclude output: \(output)")
+            }
+
+            return !containsIncorrectAssetNameHex
+        }
     }
 
     func buildForSign(transaction: Transaction) throws -> Data {