[improve][broker] optimize namespaceBundle validation to fix single-thread 100% CPU during unloading entire namespaces.#25626

lhotari merged 7 commits into

apache:masterapache/pulsar:masterfrom

zhaizhibo:avoid_repeated_NamespaceBundles_constructionzhaizhibo/pulsar:avoid_repeated_NamespaceBundles_constructionCopy head branch name to clipboard