[native/sqlite] set journal_mode on fresh install
Summary:
Add missing pragma statement setting journal_mode on a fresh install.
More context here.
Test Plan:
- Build app without db encryption code.
- Logout user.
- Connect with db using sqlite3 and run PRAGMA journal_mode; to check if mode was set properly.
Reviewers: tomek, jon, marcin
Reviewed By: tomek, marcin
Subscribers: ashoat, atul, abosh
Differential Revision: https://phab.comm.dev/D5292