[native] make user profile accessible from message author name

Summary:
This diff makes the user username in the message thread a touchable that will navigate to the user profile whenever onPress is triggered

Depends on D9385

Test Plan:
Please see the demo video below

Reviewers: atul, inka

Reviewed By: atul

Subscribers: ashoat, tomek, wyilio

Differential Revision: https://phab.comm.dev/D9386