[native] update ThreadSettingsPushNotifs to use new thread notifs settings experience

Summary:
Currently the ThreadSettingsPushNotifs component renders a switch that the user can use to update their notif settings. We should update ThreadSettingsPushNotifs to instead navigate to our new thread settings notifications screen

Depends on D12664

Test Plan:
Please see the demo video below

When hasPushPermissions is true:

When hasPushPermissions is false:

Reviewers: ashoat, inka

Reviewed By: ashoat

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D12665