Use notificationsCreationData from queueFront in peer-to-peer-context

Summary: Kamil detected that E2EE notifs work non-deterministically. The main issue is this but I think that change fixed in this might had contributed here as well.

Test Plan: Test for D13123

Reviewers: tomek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13207