Object property is not in valid snake_case format

[madhusudan1825]

File path :

wp-includes/widgets/class-wp-widget-text.php

For the "nodeName" and "textContent" properties, need to rename for maintaining snake_case format as per the coding standard.

[jrf]

Those properties are properties from the PHP native ​`DOMElement` class. Changing the case is not possible without first changing it in PHP itself.

In other words: the case of those properties should NOT be touched.