[lib] Schedule entry store ops processing

Summary:
Return the ops from the main reducer

Depends on D12147

https://linear.app/comm/issue/ENG-3486/move-entrystore-to-sqlite

Test Plan: Tested with the rest of the stack. Opening the app with a keyserver closed checks if the entries are persisted using ops processing.

Reviewers: kamil, marcin

Reviewed By: marcin

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D12152