[lib] Set CSAT on identity login / register

Summary:
issue: ENG-6882
We decided to set the CSAT on identity login / register actions, but we only want to do that on web, since on native we set it via the emitter

Test Plan: Tested that after patching D11141 (and undoing changes in lib/reducers/services-access-token-reducer.js) it is still posible to login with identity on web - the token is correctly set

Reviewers: tomek, michal, varun

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D11238