Add callback support to takeUntilTimeout in LazyCollection

[kamilkozak]

takeUntilTimeout() — optional callback support

This PR adds an optional $callback parameter to takeUntilTimeout().
The callback is executed when the timeout is reached and receives the last processed item and key (or null, null if the timeout occurs before iteration).

Benefits

• Resumable processing: store the last processed key and continue from there on the next run.
• Queue integration: throw an exception in the callback, catch it in a Job, and re-release the job back to the queue.

Examples

$users = User::cursor()->takeUntilTimeout(now()->addMinutes(14), function ($user, $key) {
    Cache::put('last_user_id', $user?->id);
});

foreach ($users as $user) {
    // ...
}

$users = User::cursor()->takeUntilTimeout(now()->addMinutes(14), function () {
    throw TimeboxExceededException::forReleaseJob();
});

Compatibility

• Callback is optional (null by default).
• Existing behavior is unchanged when no callback is passed.