Add Status filter for deleted tasks

### Describe your improvement idea or feature request

Currently the deleted tasks are shown in the filter when COMPLETED status is selected.
There can be a separate status filter for DELETED to provide more clarity.

### How would you like to see it implemented?

1. Add a deleted status filter.
2. Don't show deleted tasks in completed filter.

### Put here any screenshots or videos (optional)

_No response_

### How can we contact you (optional)

_No response_

### Would you like to work on this issue?

Yes

### By submitting this issue, I have confirmed that:

- [x] I have starred the repo ⭐ and watched 👀 it on GitHub and followed the contribution guidelines.

Comienza localizando el filtro de estado de las tareas y la asignación de COMPLETED y de las tareas eliminadas en la aplicación Flutter. Comprueba cómo se presenta el filtro y cómo se clasifican las tareas; después, verifica que DELETED se pueda seleccionar por separado y que las tareas eliminadas ya no aparezcan bajo COMPLETED.

Escrito por el modelo de indexación a partir del texto del issue.