[SES-3743] - Fix message request approval message not showing

[SessionHero01]

The underlying issue:

The direct cause is when someone approves you with a message, they send an approve message + reply message. Normally you'll receive them in order. But with push notification enabled, they can be out of order, so you receive the reply message first, then the approve message. If we receive a reply message, we know that person has approved you and we mark it so. Then once we process the approval message, we decide not to show it because that person was "approved" before. It's coming from the delete contact logic.

There are multiple places we can attack this problem, but a simplest one for now is to make sure we send the approval + reply messages in a strong order so they have much less chance to go out of order on the receiving side.

Technically there's nothing we can do if Google's push service decides to send them in a different order as they are very close to each other, but if we send in a strong order then there's less chance for them to send in different order.