[fix][broker] Fix closing of AbstractDispatcherSingleActiveConsumer and reduce flakiness of test#21736

lhotari merged 9 commits into

apache:masterapache/pulsar:masterfrom

lhotari:lh-fix-SubscriptionMessageDispatchThrottlingTestlhotari/pulsar:lh-fix-SubscriptionMessageDispatchThrottlingTestCopy head branch name to clipboard