```
row x = 1, y = 2, z = 3 | stats  a = count(*), b = count(*) | stats  c = count(*)
```

The logical optimizer does not seem to be able to handle this query:

```
{
    "error": {
        "root_cause": [
            {
                "type": "rule_execution_exception",
                "reason": "Rule execution limit [100] reached"
            }
        ],
        "type": "rule_execution_exception",
        "reason": "Rule execution limit [100] reached"
    },
    "status": 500
}
```

The problem seems to be limited to this corner case scenario where you have two aggs with the same expression in one STATS and another STATS after that.

The problem is not limited to `count(*)`, also the following fails with the same error

```
row x = 1, y = 2, z = 3 | stats  a = max(x), b = max(x) | stats  c = max(a)
```

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/optimizer/LogicalPlanOptimizer.java
@Override
        protected LogicalPlan rule(RegexExtract re) {
            LogicalPlan child = re.child();
            if (child instanceof OrderBy orderBy) {
                return orderBy.replaceChild(re.replaceChild(orderBy.child()));
            } else if (child instanceof Project) {
                var projectWithChild = pushDownPastProject(re);
                return projectWithChild.withProjections(mergeOutputExpressions(re.extractedFields(), projectWithChild.projections()));
            }
            return re;
        }
    }
    
    protected static class PushDownEnrich extends OptimizerRules.OptimizerRule<Enrich> {
        @Override
        protected LogicalPlan rule(Enrich re) {
            LogicalPlan child = re.child();
            if (child instanceof OrderBy orderBy) {
                return orderBy.replaceChild(re.replaceChild(orderBy.child()));
            } else if (child instanceof Project) {
                var projectWithChild = pushDownPastProject(re);
                var attrs = asAttributes(re.enrichFields());
                return projectWithChild.withProjections(mergeOutputExpressions(attrs, projectWithChild.projections()));
            }
            return re;
        }
    }
    protected static class PushDownAndCombineOrderBy extends OptimizerRules.OptimizerRule<OrderBy> {