[web] switch code from sql.js API to .wasm database module

Summary:
This is very important diff - it starts using .wasm API from SQLiteQueryExecutor instead of sql.js.

We do not have to migrate this content, we will simply take old content from indexedDB and put this to database module (schema is the same).

Depends on D8559

Test Plan: Test everything end-to-end.

Reviewers: michal, tomek

Reviewed By: michal

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D8560