Buggy save confirmation dialog in details view

### Describe your issue

In the details view when we update a value, it forces us to click "Yes" to save changes.
When we click "No" or "Cancel" it just pops the dialog box and again on back gesture it shows the dialog box until we select "Yes", only then we can go back.
Also in the codebase there is a Snackbar which shows on update which is never shown.

### Steps to reproduce

1. Create task
2. Try updating some value and going back on home page from details page.

### What was the expected result?

1. Go back to homepage when "Yes" or "No" is clicked.
2. Stay on details page when "Cancel" is clicked.
3. Update the values and show Snackbar when "Yes" is clicked.

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

https://github.com/user-attachments/assets/c9833d88-c423-4d0b-9641-ff9aa5dc2b83

### How can we contact you (optional)

[Zulip profile](https://ccextractor.zulipchat.com/#user/848633)

### 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 en la implementación de la vista de detalles y sigue el diálogo de confirmación del guardado y la Snackbar existente mencionados en el issue. Reproduce el flujo de actualización y vuelta atrás de los pasos indicados y verifica después que Yes guarda y muestra la Snackbar, No vuelve atrás sin guardar y Cancel permanece en la página de detalles.

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