Could not auto close unsaved editor when delete

The newly added "delete" feature #343 works well when we try to delete unchanged files. However, if we try to delete file with unsaved changes, the editor will not be closed and will looks like below:

This is not consistent with native file explorer's behavior and may also cause user lose their changes before deletion. However, this part is hard to fix due to API limitation, since many needed functions are encapsulated within the implementation of VS Code built-in commands. If microsoft/vscode#107566 could be solved, we can fix this problem easily.

Inizia dalla funzionalità di eliminazione dell’issue #343 e riproduci l’eliminazione di un file con modifiche non salvate nell’estensione VS Code. Leggi microsoft/vscode#107566 per comprendere la limitazione dell’API; il lavoro è completato quando l’editor si chiude in modo coerente con il comportamento nativo dell’esplora file, senza rischiare di perdere le modifiche non salvate.