fix: fix bugs in JavaScriptEntry.executeContract

fix the bug in exception handling of JavaScriptEntry.executeContract

src/main/java/org/bdware/sc/boundry/JavaScriptEntry.java

@@ -362,8 +362,7 @@ public class JavaScriptEntry {
                 currentSyncUtil.transRecordUtil.recordExecutes(
                         formerInvokeID + "", flag1 + "<seperate>" + flag + "<seperate>" + result);
             }
-            JsonObject jo = JsonUtil.parseStringAsJsonObject(result);
-            return JSONTool.convertJsonElementToMirror(jo);
+            return result;
         }
     }