[keyserver] Log on keyserver when session recovery is attempted

Summary: https://linear.app/comm/issue/ENG-9933/log-on-keyserver-when-session-recovery-is-attempted

Test Plan: Dispatch on mobile an action that starts session recovery and verify it's logged in keyserver

Reviewers: kamil, tomek

Reviewed By: kamil

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13952