fix: Notification Types for download cancelled & completed added.

[henit-chobisa]

Closed #2484

Issue in brief :

After starting a new download when we cancel the download, we get a notification that the download has finished, which can be misleading.

Suggested Fixes / Changes:

When the download item triggers the done event, it can have only 3 states completed, cancelled, interrupted.

Hence, the possible fix would be to show a different notification when the download is not completed i.e. the download is in the above remaining two states.

Demo of the above suggestion :

[jeanfbrito]

Do you think that we need a download cancelled notification?
Maybe a failed one, but cancelled I think that the user is already aware, right?

[jeanfbrito]

Oh now I got it. If you cancel it shows the complete notification.a
You can see to add a failed notification on the future.