top_metrics aggregation should fail if it contains sub aggregations #95663
Description
top_metrics is a metric aggregation that does not support sub aggregations. Currently if you add sub aggregation they will be silently ignored. Instead it should throw an error reporting it to the user. It is very easy to reproduce by using the example in the docs:
POST /test/_bulk?refresh {"index": {}} {"s": 1, "m": 3.1415} {"index": {}} {"s": 2, "m": 1.0} {"index": {}} {"s": 3, "m": 2.71828} POST /test/_search?filter_path=aggregations { "aggs": { "tm": { "top_metrics": { "metrics": {"field": "m"}, "sort": {"s": "desc"} }, "aggs": { "min": { "min": { "field": "m" } } } } } }