[native] Refactor MediaGalleryMedia to function component

Summary: I need this component to be a function to be able to use useAnimatedStyle when migrating to Reanimated 2

Test Plan: Teset that the gallery still works - its possible to send, queue, dequeue media. The animations seem to work as previously

Reviewers: ashoat, ginsu

Reviewed By: ashoat

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D12144