[fix](ranger) make RangerDorisAccessController as singleton to avoid more and more ranger policy refresher#45645

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

Yulei-Yang:fix_ranger_doris_controllerYulei-Yang/doris:fix_ranger_doris_controllerCopy head branch name to clipboard