Save confirmation dialog shown if file is closed while save is in progress

Does this issue occur when all extensions are disabled?: Yes

- VS Code Version: 1.109.5
- OS Version: Mac/Debian 13

1. Open a file somewhere where saving it is really slow (e.g. an NFS mount).
2. Edit it.
3. Press Ctrl-S, Ctrl-W really quickly.

What can sometimes happen is that it shows the "Do you want to save the changes you made to ? [Save] [Don't Save] [Cancel]" dialog, even though you already pressed Ctrl-S.

Presumably the close-file handler checks if the file has unsaved changes and if so it shows that dialog.

What it should do is also check if there is a save currently in progress, and if so just wait for that save to finish and then close the file.

It's very annoying for things like editing Git commit messages.