add args to editor.action.formatDocument.multiple

[leep-frog]

Fix for #245742

[leep-frog]

I was able to try this out locally and it works as expected!

I ran the following commands (see video below):

1. Created a keybinding that runs the editor.action.formatDocument.multiple command (with the formatter argument commented out)
2. Run the command on hello.py
3. Prompted to select which formatter to use (this is consistent with current behavior outside of this PR
4. Updated the keybinding to un-comment the formatter argument
5. Run the command on hello.py
6. No formatter prompt is shown and formatting is run with the provided formatter

Format.multiple.with.args.mp4