[native] Modify retryMultimediaMessage to incorporate thumbnails

Summary: Modify retryMultimediaMessage to incorporate thumbnails. Written by Ashoat on Monday.

Test Plan: Will be tested with subsequent diff which actually uploads generated thumbnail

Reviewers: ashoat, palys-swm

Reviewed By: ashoat

Subscribers: KatPo, zrebcu411, Adrian, subnub

Differential Revision: https://phabricator.ashoat.com/D948