Unescape CSS selector to XPath for id and class fields #18247
Description
This is a bug report for https://github.com/symfony/css-selector
Given a CSS selector #abc\.def that matches an element <div id="abc.def"> the resulting XPath selector contains [@id = '#abc\.def'], but the backslash should be omitted for the XPath. The XPath converter should unescape CSS selector parts, this holds for ID's, classes and element names.
EDIT: it does seem to unescape hex sequences (\34 5 => 45) but not other special characters such as . and :
Test code:
$xpath = (new CssSelectorConverter())->toXPath('#abc\.def');
// descendant-or-self::*[@id = 'abc\.def']