Chaperone tokenable model

[scrummitch]

Since this repository requires laravel v11 lets automatically chaperone the tokenable relationship since its somewhat convoluted to eager load.

For example:

// Will cause a lazy loading exception if Model::preventLazyLoading() is enabled
$user->tokens->map(fn (PersonalAccessToken $token) {
    dump($token->tokenable);
});

[taylorotwell]

I don't think I really want to introduce this on a patch release.