[SQLite] add table with inbound P2P messages to backup blocklist

Summary:
We shouldn't back up this table. In case of restore (when some messages are not yet processed) we should as other peers to resend messages encrypted with a new session.

This should be initially done in D11722.

Depends on D12068

Test Plan: N/A

Reviewers: tomek, marcin

Reviewed By: marcin

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D12069