Unexpected behavior on clone and MapTo

[regnerisch]

Hey,

I want to report an unexpected behavior/ bug when using clone and MapTo. 

Here is an example: 

class ExampleData extends DataTransferObject
{
    #[MapTo('account_id')]
    public ?int $account;

    #[CastWith(CarbonImmutableCaster::class), MapTo('expires_at')]
    public ?CarbonImmutable $expiresAt;
}

Reproduce the problem:

$o = new ExampleData(
  account: 1,
  expiresAt: '2020-01-01 12:00:00'
);

$nO = $o->clone(account: 2); // I would expect $nO to have account 2 with same expiresAt

$nO->toArray() // [account: 2, expires_at: null]

This happens because of how clone/ toArray works:

    public function clone(...$args): static
    {
        return new static(...array_merge($this->toArray(), $args));
    }

The code above does something like:

return new static(...array_merge([
  'account_id' => 1,
  'expires_at': '2020-01-01 12:00:00'
], [
  'account' => 2
]);

And this is where the problem comes in. The property name is expiresAt so expires_at is not matched and instead dropped. Only account works, as it is specified correctly. 

This maybe could be avoided with a MapFrom I guess, but I expect it to work without.

Could we potentially change/fix this behavior?