**Describe what's wrong**

Query with rollup using same selected field name as the name of underlying column reports structure mismatch

**Does it reproduce on recent release?**

yes

**How to reproduce**

`21.9.2.17`

```sql
CREATE TABLE test
(
    `d` DateTime,
    `a` LowCardinality(String),
    `b` UInt64
)
ENGINE = MergeTree
PARTITION BY toDate(d)
ORDER BY d;

SELECT *
FROM (
    SELECT
        a,
        max((d, b)).2 AS value
    FROM test
    GROUP BY rollup(a)
)
WHERE a <> '';
```

**Expected behavior**

This used to return an ok result on v21.8

**Error message and/or stacktrace**

> Code: 352. DB::Exception: Block structure mismatch in (columns with identical name must have identical structure) stream: different columns:
> notEquals(a, '') LowCardinality(UInt8) ColumnLowCardinality(size = 0, UInt8(size = 0), ColumnUnique(size = 1, UInt8(size = 1)))
> notEquals(a, '') LowCardinality(UInt8) Const(size = 0, ColumnLowCardinality(size = 1, UInt8(size = 1), ColumnUnique(size = 2, UInt8(size = 2)))). (AMBIGUOUS_COLUMN_NAME) (version 21.9.2.17 (official build))



actions_dag->addAliases(result_columns);
    }
    if (!(add_aliases && project_result))
    {
        NameSet name_set(result_names.begin(), result_names.end());
        
        for (const auto & column_name_type : sourceColumns())
        {
            if (name_set.count(column_name_type.name) == 0)
            {
                result_names.push_back(column_name_type.name);
                name_set.insert(column_name_type.name);
            }
        }
        actions_dag->removeUnusedActions(name_set);
    }
    return actions_dag;
}
ExpressionActionsPtr ExpressionAnalyzer::getActions(bool add_aliases, bool project_result, CompileExpressions compile_expressions)
{
    return std::make_shared<ExpressionActions>(
        getActionsDAG(add_aliases, project_result), ExpressionActionsSettings::fromContext(getContext(), compile_expressions));
}
ExpressionActionsPtr ExpressionAnalyzer::getConstActions(const ColumnsWithTypeAndName & constant_inputs)
{
    auto actions = std::make_shared<ActionsDAG>(constant_inputs);
    getRootActions(query, true, actions, true);
    return std::make_shared<ExpressionActions>(actions, ExpressionActionsSettings::fromContext(getContext()));
}
std::unique_ptr<QueryPlan> SelectQueryExpressionAnalyzer::getJoinedPlan()