[native] Fix blinking overlay background

Summary: issue: ENG-9058

Test Plan:
Please see the video:

(this is with a sleep(2000) in the nux handler, because otherwise the tip gets dismissed for some reason. Created https://linear.app/comm/issue/ENG-9085/fix-tip-getting-dismissed to track

Reviewers: tomek, will

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13136