Description:
------------
When instantiating an object using reflectionClass::newInstanceWithoutConstructor, assigning values to uninitialized typed properties has no effect.

Test script:
---------------
class Foo
{
    protected string $bar;
    protected string $baz;
    protected string $qux = 'initial qux';

    public function fillValues()
    {
        $this->bar = 'bar';
        $this->baz = 'baz';
        $this->qux = 'qux';
    }

    public function getBar()
    {
        return $this->bar;
    }

    public function getBaz()
    {
        return $this->baz;
    }

    public function getQux()
    {
        return $this->qux;
    }
}

$rc = new ReflectionClass(Foo);
$foo = $rc->newInstanceWithoutConstructor();
$foo->fillValues();
echo $foo->getBar() . PHP_EOL;
echo $foo->getBaz() . PHP_EOL;
echo $foo->getQux() . PHP_EOL;

Expected result:
----------------
bar
baz
qux

Actual result:
--------------
Fatal error: Uncaught Error: Typed property Foo::$bar 
must not be accessed before initialization