branch-3.1: [fix](mow) fix potential mem leak for DeleteBitmap::get_agg #52718,#52756#52860

morrySnow merged 2 commits intoapache:branch-3.1apache/doris:branch-3.1from

zhannngchen:cp-52718-3.1zhannngchen/incubator-doris:cp-52718-3.1Copy head branch name to clipboard