Description:
------------
ReflectionClass#getDefaultProperties() produces an array with an invisible property when used in combination with typed properties

Test script:
---------------
<?php

class A {
    public B $c;
}

$class = new ReflectionClass(A::class);

$defaults = $class->getDefaultProperties();

var_dump($defaults);
var_dump(array_key_exists('c', $defaults));

Expected result:
----------------
array(0) {
}
bool(false)

Actual result:
--------------
array(1) {
}
bool(true)