**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))



{
                columns.emplace_back(column.type, column.name);
                unused_source_columns.emplace(column.name);
            }
        }
        chain.steps.emplace_back(std::make_unique<ExpressionActionsChain::ExpressionActionsStep>(
                std::make_shared<ActionsDAG>(std::move(columns))));
        chain.steps.back()->additional_input = std::move(unused_source_columns);
        chain.getLastActions();
        chain.addStep();
    }
    return prewhere_actions;
}
bool SelectQueryExpressionAnalyzer::appendWhere(ExpressionActionsChain & chain, bool only_types)
{
    const auto * select_query = getSelectQuery();
    if (!select_query->where())
        return false;
    ExpressionActionsChain::Step & step = chain.lastStep(columns_after_join);
    getRootActions(select_query->where(), only_types, step.actions());
    auto where_column_name = select_query->where()->getColumnName();
    step.addRequiredOutput(where_column_name);
    const auto & node = step.actions()->findInIndex(where_column_name);
    auto filter_type = node.result_type;
    if (!filter_type->canBeUsedInBooleanContext())
        throw Exception("Invalid type for filter in WHERE: " + filter_type->getName(),
                        ErrorCodes::ILLEGAL_TYPE_OF_COLUMN_FOR_FILTER);
    return true;
}
bool SelectQueryExpressionAnalyzer::appendGroupBy(ExpressionActionsChain & chain, bool only_types, bool optimize_aggregation_in_order,