Tracing aggregation untagged trick makes deserialization very opaque

[fulmicoton]

if you try passing an incorrect json object like this one

{
 "aggs": {
    "resolution": {
       "term": {"field": "ResolutionWidth"}
     }
 } 
}

(term should be terms)

The error we get is

{
  "message": "Invalid aggregation request: data did not match any variant of untagged enum QuickwitAggregations"
}

[PSeitz]

Duplicate of #1485

[fulmicoton]

Closing as it is a duplicate.