[native] Convert ConnectedSwipeable to functional component

Summary: I thought the changes here would prevent SwipeableThread from re-rendering, but it looks like I misinterpreted some profiling sessions... that said I already did this work so figured I'd put it up (assuming it isn't burdensome for reviewers to review, etc.)

Test Plan: SwipeableThread continues to look and work as before.

Reviewers: ginsu, tomek, rohan

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D9118