AMQ-9452: unwind BaseDestination to access queue/topic message

[ggkochanski]

When dest is instance of DestinationFilter the queue/topic message is not accessed (statistic "firstMessageTimestamp" is not sent)

[mattrpav]

Please add a unit test, and squash the commits into one for this change.

[ggkochanski]

@mattrpav I've added changes in BrokerStatisticsPluginTest which proves the fix:

1. additional plugin, which just proxes Destination with DestinationFilter:

        //AMQ-9452: proxy destinations with DestinationFilter
        plugins[0] = new BrokerPluginSupport() {
            @Override
            public Set<Destination> getDestinations(ActiveMQDestination destination) {
                return super.getDestinations(destination).stream().map(DestinationFilter::new).collect(Collectors.toSet());
            }
        };

2. additional assert in test testDestinationStatsWithFirstMessageTimestamp, which proves statistic field firstMessageTimestamp is set by StatisticsBroker:
   assertTrue(reply.getLong("firstMessageTimestamp") > 0);

[jbonofre]

@ggkochanski Thanks ! I will take a look.

[ggkochanski]

really nice metric (tried patched version in action), I encourage to merge 😊