branch-3.0: [fix](nereids) do eliminate constant group by key in normalizeagg #49589 #50215

dataroaring merged 3 commits intoapache:branch-3.0apache/doris:branch-3.0from

feiniaofeiafei:pick_normalize_3.0feiniaofeiafei/doris:pick_normalize_3.0Copy head branch name to clipboard