branch-2.1:[opt](mtmv) metadata cache of external table no longer be refreshed b…#48766

yiguolei merged 1 commit intoapache:branch-2.1apache/doris:branch-2.1from

zddr:mv_not_refresh_cache_2.1zddr/incubator-doris:mv_not_refresh_cache_2.1Copy head branch name to clipboard