[native] Move render function in MultimediaMessageMultimedia to functional component

Summary:
Move render() function to functional component as a part of MultimediaMessageMultimedia migration to a functional component. This finishes the migration of the MultimediaMessageMultimedia component to a functional component.

Depends on D14134

Test Plan: Open up a multimedia message and see if it behaves correctly.

Reviewers: ashoat, tomek

Reviewed By: ashoat

Differential Revision: https://phab.comm.dev/D14135