call `hideAllPanels` on `file-added`
call `hideAllPanels` on `file-added`

I believe this was removed because we were doing `addFile` right away when it was selected in `Providers`, which is not the case now, so safe to close Dashboard panels when a file is added.

transloadit/uppy,transloadit/uppy,transloadit/uppy,transloadit/uppy