Trin sends 4x more FindContent requests than expected

[ogenev]

It seems there is a bug in the overlay service that is causing Trin to send 4 FindContent requests instead of 1, even if the first request is successful.

The "ghost" FindContent requests are sent inside handle_find_content_query_event when the query status is QueryEvent::Waiting.

I suspect that this is because the QueryEvent is in waiting status until the uTP of the first FindContent request completes, which triggers the additional requests.