ISSUE-17657: Tracking issue for slowly tests

[sijie]

Original Issue: apache#17657

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Motivation

This issue tracks efforts to optimize slow testing(which took more than 5 minutes), focusing on unit tests.

Slowly Test

• slowly-test: org.apache.pulsar.client.api.SimpleSchemaTest apache/pulsar#17644
• slowly-test: SimpleProducerConsumerTestStreamingDispatcherTest apache/pulsar#17643
• slowly-test: org.apache.pulsar.broker.admin.AdminApi2Test apache/pulsar#17642
• slowly-test: org.apache.pulsar.broker.admin.v1.V1_AdminApiTest apache/pulsar#17641
• slowly-test: org.apache.pulsar.broker.admin.AdminApiTest apache/pulsar#17640
• slowly-test: org.apache.pulsar.broker.service.ReplicatorTest apache/pulsar#17639
• slowly-test: TransactionEndToEndWithoutBatchIndexAckTest apache/pulsar#17637
• slowly-test: SubscriptionMessageDispatchThrottlingTest apache/pulsar#17636
• slowly-test: KeySharedSubscriptionTest apache/pulsar#17635
• slowly-test: SimpleProducerConsumerTest apache/pulsar#17634
• slowly-test: org.apache.pulsar.client.impl.TransactionEndToEndTest apache/pulsar#17623
• slowly-test: org.apache.pulsar.broker.admin.NamespacesTest apache/pulsar#17622
• slowly-test: ClusterMetadataSetupTest apache/pulsar#17621