[native] toggle reaction action in onPressReact function

Summary:
toggle reaction action in onPressReact function. Hard setting reactionInput right now but will changing this when we expand from just sending likes to more reactions.

Also, right now the tooltip option does not change from '👍', but will be addressing this in a subsequent diff

Linear Task: ENG-2243
Depends on D5854

Test Plan:
Please watch the demo video to see how the toggle works:

Reviewers: atul, tomek, rohan

Reviewed By: atul, tomek

Subscribers: ashoat, tomek, atul

Differential Revision: https://phab.comm.dev/D5854