**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))



ManyExpressionActions & group_by_elements_actions)
{
    const auto * select_query = getAggregatingQuery();
    if (!select_query->groupBy())
        return false;
    ExpressionActionsChain::Step & step = chain.lastStep(columns_after_join);
    ASTs asts = select_query->groupBy()->children;
    for (const auto & ast : asts)
    {
        step.addRequiredOutput(ast->getColumnName());
        getRootActions(ast, only_types, step.actions());
    }
    if (optimize_aggregation_in_order)
    {
        for (auto & child : asts)
        {
            auto actions_dag = std::make_shared<ActionsDAG>(columns_after_join);
            getRootActions(child, only_types, actions_dag);
            group_by_elements_actions.emplace_back(
                std::make_shared<ExpressionActions>(actions_dag, ExpressionActionsSettings::fromContext(getContext(), CompileExpressions::yes)));
        }
    }
    return true;
}
void SelectQueryExpressionAnalyzer::appendAggregateFunctionsArguments(ExpressionActionsChain & chain, bool only_types)