Ensure SQLiteContextProvider doesn't query SQLite and modify redux if user is logged out.

Summary: This differential ensures no action is dispatched to modify MessageStore or ThreadsStore, when user is logged out.

Test Plan: Build the app, log-out, kill the app and start it again with flipper. Ensure no MessageStore or ThreadsStore action is dispatched.

Reviewers: atul, tomek, ashoat

Reviewed By: ashoat

Subscribers: ashoat, abosh

Differential Revision: https://phab.comm.dev/D5555