[lib] Clear enabled apps on logout

Summary:
When a user is logged out we should clear enabled apps.

Fixes https://linear.app/comm/issue/ENG-1617/handle-logout-in-enabled-apps-reducer
Depends on D4847

Test Plan:
native: set calendar as enabled, log out, log in and check if calendar is disabled.
web: tested as a part of D4812

Reviewers: jacek, atul

Reviewed By: atul

Subscribers: ashoat, adrian, abosh

Differential Revision: https://phab.comm.dev/D4848