`CurrentEventsByTag` query on PostgreSql returns unordered events

[Gregorius Soedharmo]

Version Information
Version of Akka.Persistence.Sql? dev

Describe the bug
CurrentEventsByTag query on PostgreSql using the new TagTable returns unordered events

To Reproduce
Steps to reproduce the behavior:

[Fact]
public override void ReadJournal_query_CurrentEventsByTag_should_see_all_150_events()
{
    var queries = ReadJournal as ICurrentEventsByTagQuery;
    var a = Sys.ActorOf(SpecTestActor.Props("a"));

    for (var i = 0; i < 150; ++i) 
    {
        a.Tell("a green apple");
        ExpectMsg("a green apple-done");
    }

    var greenSrc = queries.CurrentEventsByTag("green", offset: Offset.NoOffset());
    var probe = greenSrc.RunWith(this.SinkProbe<EventEnvelope>(), Materializer);
    probe.Request(150);
    
    var list = probe.ExpectNextN(150).ToList();
    Log.Info($"Order: {string.Join(",", list.Select(e => e.SequenceNr))}");
    list.Count.Should().Be(150);
    var expectedSeqNr = 0;
    foreach (var env in list)
    {
        env.PersistenceId.Should().Be("a");
        env.Event.Should().Be("a green apple");
        expectedSeqNr++;
        env.SequenceNr.Should().Be(expectedSeqNr);
    }
    
    probe.ExpectComplete();
    probe.ExpectNoMsg(TimeSpan.FromMilliseconds(500));
}

Expected behavior
SequenceNr be a list of numbers, from 1 to 150

Actual behavior

Order: 
1,2,3,4,5,6,7,8,9,10,
11,12,13,14,15,16,17,18,19,20,
21,22,23,24,25,26,27,28,29,30,
31,32,33,34,35,36,37,38,39,40,
41,42,43,44,45,46,47,48,49,50,
51,52,53,54,55,56,57,58,59,60,
61,62,63,64,65,66,67,68,69,70,
71,72,73,74,75,76,77,78,79,80,
81,82,83,84,85,86,87,88,89,90,
91,92,93,94,95,96,97,98,100,102, <== SequenceNr goes out of order here
104,106,108,110,112,114,116,118,120,122,
124,126,128,130,132,134,136,138,140,142,
144,146,148,150,99,101,103,105,107,109,
111,113,115,117,119,121,123,125,127,129,
131,133,135,137,139,141,143,145,147,149