[native] Disable typeahead and media buttons in edit mode

Summary: We don't want to display typeahead and media buttons in edit mode.

Test Plan: Run the app. Entered exit mode. Checked if the media buttons disappeared, and if typeahead tooltip wasn't showing. Exited edit mode. Checked if everything appeared again.

Reviewers: michal, inka

Reviewed By: inka

Subscribers: ashoat, tomek, atul

Differential Revision: https://phab.comm.dev/D7448