Ancillary Marten stores don't necessarily use the correct message database in inbox/outbox operations

[jeremydmiller]

The envelopes are going to the correct database schema, but the DurableReceiver and durable sending agents aren't using the correct databases.

Only really an issue for local queues where messages are sent as part of a message using the ancillary store

[jeremydmiller]

Use this test in the code to bring out the problem:

    [Fact]
    public async Task try_to_use_the_session_transactional_middleware_end_to_end_through_a_queue()
    {
        var message = new SpawnPlayerMessage(Guid.NewGuid().ToString());
        var tracked = await theHost.InvokeMessageAndWaitAsync(message, timeoutInMilliseconds:60000);
        var envelopeId = tracked.Executed.SingleEnvelope<PlayerMessage>().Id;
    
        var store = theHost.DocumentStore<IPlayerStore>();
        using var session = store.QuerySession();
        var player = await session.LoadAsync<Player>(message.Id);
    
        player.ShouldNotBeNull();
    
        var runtime = theHost.GetRuntime();
        var messageStore = runtime.AncillaryStores.OfType<IAncillaryMessageStore<IPlayerStore>>().Single();
        var envelope = (await messageStore.Admin.AllIncomingAsync()).Single(x => x.Id == envelopeId);
        envelope.Status.ShouldBe(EnvelopeStatus.Handled);
        envelope.OwnerId.ShouldBe(TransportConstants.AnyNode);
    }

Basic issue is that the ancillary store is being more or less ignored and still using the main postgres message store. No big deal if you're all on the same database, but still.