Migrate notification account to IndexedDB on web

Summary: This differential moves notifications crypto account persistence from SQLite to IndexedDB on web

Test Plan: Execute test plan for D12676. If it works it means we can establish sessions between web and other devices.

Reviewers: tomek, kamil, bartek

Reviewed By: kamil

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D12692