Set dynamic properties with predicate

[veewee]

Q	A
Type	bug/
BC Break	no
Fixed issues

Summary

The new predicate system in properties_set did not take into account new properties on dynamic classes.
This PR fixes that:

$x = new \stdClass();
$x->foo = 'foo';

$actual = properties_set($x, ['bar' => 'bar']);

static::assertNotSame($x, $actual);
static::assertInstanceOf(\stdClass::class, $actual);
static::assertSame($actual->foo, 'foo');
static::assertSame($actual->bar, 'bar');

$x = new \stdClass();
$x->foo = 'foo';

$actual = properties_set(
    $x,
    [
        'foo' => 'baz',
        'bar' => 'bar',
    ],
    static fn (ReflectedProperty $property): bool => false
);

static::assertNotSame($x, $actual);
static::assertInstanceOf(\stdClass::class, $actual);
static::assertSame($actual->foo, 'foo');
static::assertSame($actual->bar, 'bar');