[native] Update flow definitions related to navigators headers

Summary:
Realted linear issue: https://linear.app/comm/issue/ENG-2285/add-hamburger-menu-button-to-tabs
Updating some flow types that relate to navigators headers, as I need bottom tab navigators header definitioon for community drawer.

Test Plan:
run flow in comm/native/. Cross referencing with ts types, although there are some differences between ts types and react naviagtion docs. I found that sometimes ts types have more fields that
docs specify. In these cases I have omitted these fields.

Reviewers: tomek, atul, ashoat

Reviewed By: tomek, ashoat

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D5784