[cloud_firestore] Add MetadataChanges to documentReference.snapshot()

[basketball-ico]

I want to use MetadataChanges like in Android

[collinjackson]

I believe that this is a duplicate of #16432 and it was fixed in flutter/plugins#1918. Please let me know if I'm mistaken

[kroikie]

@basketball-ico

This issue has been moved to firebase/flutterfire#1210. Any further collaboration will be done there.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.