[native] Update SelectionWithID type to included video thumbnails

Summary: This type is now called UploadFileInput to represent its contents a little better.

Test Plan: Flow, will test in combination with future diffs

Reviewers: palys-swm, atul

Reviewed By: atul

Subscribers: KatPo, zrebcu411, Adrian, subnub

Differential Revision: https://phabricator.ashoat.com/D934