Is there an existing issue for this?

• I have searched the existing issues
• I have read the guide to filing a bug

Use case

I use file_selector's openFile() and openFiles() to pick up files. They work fine on Windows and Android. But on iOS, it shows a popup that no files can be selected:

Turns out you need to pass a public.item type identifier as acceptedTypeGroups:

[
  const XTypeGroup(uniformTypeIdentifiers: ['public.item'])
]

Proposal

It makes no sense to open a file selector that cannot pick up any files. The public.item type identifier on iOS should be default if acceptedTypeGroups is empty. This makes sure that the same function call results in the same behavior on different platforms.