[lib] Broadcast device list update during primary logout

Summary:
Calling LogOutPrimaryDevice RPC performs device list update on Identity. After this is done (but before local Redux and DB is cleared) we need to broadcast new device list to peers.

Depends on D12604

Test Plan: Tested it on natvie and web - the update is broadcasted despite being already logged out

Reviewers: kamil

Reviewed By: kamil

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D12605