[9.0] ESQL: Fail in AggregateFunction when `LogicPlan` is not an `Aggregate`#125402

ivancea merged 2 commits intoelastic:9.0elastic/elasticsearch:9.0from

ivancea:backport-9.0-agg-verificationivancea/elasticsearch:backport-9.0-agg-verificationCopy head branch name to clipboard