[lib] broadcast device list updates after secondary device logout

Summary:
Adding code broadcast updates after the primary removes the device from the device list

Depends on D12380

Test Plan:

1. Run local TB, and Identity, and make all clients connect to it.
2. usingCommServicesAccessToken = true
3. Login on multiple devices (2 devices of user A, 1 device of user B but A is aware of B).
4. Secondary logout on A's secondary device.
5. All A's and B's devices should receive a device list update.

Reviewers: bartek, tomek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D12381