fix: fix gettransactioninfobyblocknum result format

Author: Wenhua Zhang

src/main/java/org/tron/common/utils/Utils.java

@@ -165,7 +165,7 @@ public static String printTransactionInfoList(TransactionInfoList transactionInf
     List<TransactionInfo> infoList = transactionInfoList.getTransactionInfoList();
     infoList.stream()
         .forEach(
-            transactionInfo -> jsonArray.add(formatMessageString(transactionInfo))
+            transactionInfo -> jsonArray.add(printTransactionInfoToJSON(transactionInfo))
         );
     return JsonFormatUtil.formatJson(jsonArray.toJSONString());
   }
@@ -610,6 +610,10 @@ public static JSONObject printTransactionToJSON(Transaction transaction, boolean
     return jsonTransaction;
   }
 
+  public static JSONObject printTransactionInfoToJSON(TransactionInfo transactioninfo) {
+    return JSONObject.parseObject(JsonFormat.printToString(transactioninfo, true));
+  }
+
   public static boolean confirmEncrption() {
     System.out.println(
         "Please confirm encryption module,if input y or Y means default Eckey, other means SM2.");