[Bug] receiver_queue_size is not honoured with partitioned topic #21593

**Versions**
Pulsar version 2.10.4
OS: Ubuntu(version=22.04)
Client(Python): pulsar-client(Version=3.3.0)

**Minimal reproduce step**
Create a partitioned topic with one partition
bin/pulsar-admin topics create-partitioned-topic persistent://public/default/test-consumer -p 1

Publish some messages

Create one consumer as following
consumer = client.subscribe( topic='persistent://public/default/test-consumer', subscription_name='test', consumer_type=ConsumerType.Shared, initial_position=InitialPosition.Earliest, receiver_queue_size=1, max_total_receiver_queue_size_across_partitions=1, consumer_name=None, negative_ack_redelivery_delay_ms=60000, unacked_messages_timeout_ms=3600000)

Receive and ack one message
consumer.receive(timeout_millis=30000)
consumer.acknowledge(message=message_id)

Check stats(Its showing 2 unack messages but its not received yet, also if we create another consumer and try to consume messages its not delivering)

**What did you expect to see?**
It should not show 2 unack messages, instead it should show 1 message since receiver size is 1.

**What did you see instead?**
I can see 2 unack in stats as following
Command: bin/pulsar-admin topics partitioned-stats persistent://public/default/test-consumer

{
"msgRateIn" : 0.0,
"msgThroughputIn" : 0.0,
"msgRateOut" : 0.07158759338136238,
"msgThroughputOut" : 4.271393071754622,
"bytesInCounter" : 179,
"msgInCounter" : 3,
"bytesOutCounter" : 179,
"msgOutCounter" : 3,
"averageMsgSize" : 0.0,
"msgChunkPublished" : false,
"storageSize" : 179,
"backlogSize" : 120,
"publishRateLimitedTimes" : 0,
"earliestMsgPublishTimeInBacklogs" : 0,
"offloadedStorageSize" : 0,
"lastOffloadLedgerId" : 0,
"lastOffloadSuccessTimeStamp" : 0,
"lastOffloadFailureTimeStamp" : 0,
"publishers" : [ ],
"waitingPublishers" : 0,
"subscriptions" : {
"test" : {
"msgRateOut" : 0.07158759338136238,
"msgThroughputOut" : 4.271393071754622,
"bytesOutCounter" : 179,
"msgOutCounter" : 3,
"msgRateRedeliver" : 0.0,
"messageAckRate" : 0.0,
"chunkedMessageRate" : 0,
"msgBacklog" : 2,
"backlogSize" : 0,
"earliestMsgPublishTimeInBacklog" : 0,
"msgBacklogNoDelayed" : 2,
"blockedSubscriptionOnUnackedMsgs" : false,
"msgDelayed" : 0,
"unackedMessages" : 2,
"msgRateExpired" : 0.0,
"totalMsgExpired" : 0,
"lastExpireTimestamp" : 0,
"lastConsumedFlowTimestamp" : 0,
"lastConsumedTimestamp" : 0,
"lastAckedTimestamp" : 0,
"lastMarkDeleteAdvancedTimestamp" : 0,
"consumers" : [ {
"msgRateOut" : 0.07158759338136238,
"msgThroughputOut" : 4.271393071754622,
"bytesOutCounter" : 179,
"msgOutCounter" : 3,
"msgRateRedeliver" : 0.0,
"messageAckRate" : 0.023862530971099603,
"chunkedMessageRate" : 0.0,
"availablePermits" : 0,
"unackedMessages" : 2,
"avgMessagesPerEntry" : 0,
"blockedConsumerOnUnackedMsgs" : false,
"lastAckedTimestamp" : 0,
"lastConsumedTimestamp" : 0
}, {
"msgRateOut" : 0.0,
"msgThroughputOut" : 0.0,
"bytesOutCounter" : 0,
"msgOutCounter" : 0,
"msgRateRedeliver" : 0.0,
"messageAckRate" : 0.0,
"chunkedMessageRate" : 0.0,
"availablePermits" : 1,
"unackedMessages" : 0,
"avgMessagesPerEntry" : 0,
"blockedConsumerOnUnackedMsgs" : false,
"lastAckedTimestamp" : 0,
"lastConsumedTimestamp" : 0
} ],
"isDurable" : true,
"isReplicated" : false,
"allowOutOfOrderDelivery" : false,
"consumersAfterMarkDeletePosition" : { },
"nonContiguousDeletedMessagesRanges" : 0,
"nonContiguousDeletedMessagesRangesSerializedSize" : 0,
"subscriptionProperties" : { },
"durable" : true,
"replicated" : false
}
},
"replication" : { },
"nonContiguousDeletedMessagesRanges" : 0,
"nonContiguousDeletedMessagesRangesSerializedSize" : 0,
"compaction" : {
"lastCompactionRemovedEventCount" : 0,
"lastCompactionSucceedTimestamp" : 0,
"lastCompactionFailedTimestamp" : 0,
"lastCompactionDurationTimeInMills" : 0
},
"metadata" : {
"partitions" : 1
},
"partitions" : { }
}