[lib] Render a socket for each keyserver

Summary:
The socket is finally ready to be rendered for each keyserver.

https://linear.app/comm/issue/ENG-5872/render-a-socket-for-each-connected-keyserver

Depends on D11186

Test Plan: Test if the app works correctly with one keyserver. More thorough testing will be performed as a part of https://linear.app/comm/issue/ENG-5875/test-socket-connection-to-at-least-two-keyservers.

Reviewers: michal, atul, inka, kamil

Reviewed By: michal

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D11187