CommentXobj shouldn't have child nodes

[macbarSB]

Hello

Current version has an issue, when xml contains comment followed by a whitespace character. This leads to situation, when after first iteration of xpath selection the hasChildNodes() method returns true for CommentXobj instance. With that next usages of selectPath(...) return incorrect result.

Please see code below for reproduction:

        XmlObject xmlObject = XmlObject.Factory.parse("<outerTag><!-- comment with whitespace after it --> <innerTag>textToFind1</innerTag><innerTag>textToFind2</innerTag></outerTag>");
        String xpath = "//innerTag";

        System.out.println(Arrays.stream(xmlObject.selectPath(xpath)).toList().size()); // prints 2
        System.out.println(Arrays.stream(xmlObject.selectPath(xpath)).toList().size()); // prints 0