[Bug]: $set() does not update the picker date

[se1exin]

What happened?

When using reactivity in a filament form, if I try to change the date of the Flatpickr using $set('date'), nothing happens.

How to reproduce the bug

Create a form with 2 inputs, have one of them update the Flatpickr instance when it changes using afterStateUpdated.

// ...Example filament form schema
[
  TextInput::make('date_str')
      ->live()
      ->afterStateUpdated(function (Get $get, Set $set) {
         $dateStr = $get('date_str');  // I have entered 2026-01-16
         $set('date', $dateStr);
      }),
   Flatpickr::make('date')
]

Note: This will work when using the built-in DatePicker component.

Package Version

5.0.0

PHP Version

8.4.15

Laravel Version

12.46.0

Which operating systems does with happen with?

Linux

Notes

No response