fix(kafka): retain failed message persistence

server/kafka_audit_test.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/golang/mock/gomock"
+	"github.com/segmentio/kafka-go"
 	"github.com/tinode/chat/server/store"
 	"github.com/tinode/chat/server/store/mock_store"
 	"github.com/tinode/chat/server/store/types"
@@ -39,6 +40,9 @@ func TestNormalizeKafkaConfigUsesLowLatencyBatchTimeout(t *testing.T) {
 	if cfg.MaxRetryCount != 3 {
 		t.Fatalf("unexpected kafka max retry count: %d", cfg.MaxRetryCount)
 	}
+	if cfg.RequiredAcks != int(kafka.RequireAll) {
+		t.Fatalf("unexpected kafka required acks: %d", cfg.RequiredAcks)
+	}
 }
 
 func TestEnqueueKafkaAuditEventPublishesCrossSystemEvent(t *testing.T) {