PHP8 - add NoUnreachableDefaultArgumentValueFixer to risky set

[SpacePossum]

The following no longer parses on PHP8

<?php

function foo($a = 1, $b){
    
}

https://3v4l.org/RQha3

<?php
class Point {
    public function Point(
        public float $x = 70.0) {}
}

$a = new Point();
echo $a->x;

https://3v4l.org/OG8r1

[keradus]

Thank you @SpacePossum.