Adjust reducers to new redux action

Summary: Adjust reducers to new redux action

Test Plan:

1. Make sure eslint and flow do not complain.
2. In SQLiteContextProvider component, just after add code that dispatches new redux action just before other actions (SET_X_STORE) are dispatched. Observe in flipper that diffs in redux state resulting from subsequent SET_X_STORE actions are empty.
3. Log out. Start the app. Observe in flipper that diff resulting from SET_CLIENT_DB_STORE is empty.

Reviewers: tomek, atul

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D5710