Call toJSonString with no state for BC (#164)

* Call toJSonString with no state for BC

State for BC is not relevant for VRO parameters integrity

* Keep IGxJSONSerializable case

(cherry picked from commit ca49221)

Author: dmendez

java/src/main/java/com/genexus/webpanels/GXWebObjectBase.java

@@ -562,7 +562,15 @@ private String serialize(Object Value) {
 	    		}
 	        }
 	        else{
-	        	strValue = (Value instanceof IGxJSONSerializable) ? ((IGxJSONSerializable)Value).toJSonString() : Value.toString();
+				if (Value instanceof com.genexus.xml.GXXMLSerializable) {
+					strValue = ((com.genexus.xml.GXXMLSerializable) Value).toJSonString(false);
+				}
+				else if (Value instanceof IGxJSONSerializable) {
+					strValue = ((IGxJSONSerializable) Value).toJSonString();
+				}
+				else {
+					strValue = Value.toString();
+				}
 	        }
 		}
 		return strValue;