**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))



query_plan,
                query_info.projection->aggregate_overflow_row,
                query_info.projection->aggregate_final,
                false,
                context_->getSettingsRef(),
                query_info.projection->aggregation_keys,
                query_info.projection->aggregate_descriptions);
        }
    }
}
bool InterpreterSelectQuery::shouldMoveToPrewhere()
{
    const Settings & settings = context->getSettingsRef();
    const ASTSelectQuery & query = getSelectQuery();
    return settings.optimize_move_to_prewhere && (!query.final() || settings.optimize_move_to_prewhere_if_final);
}
void InterpreterSelectQuery::addPrewhereAliasActions()
{
    auto & expressions = analysis_result;
    if (expressions.filter_info)
    {
        if (!expressions.prewhere_info)
        {
            const bool does_storage_support_prewhere = !input && !input_pipe && storage && storage->supportsPrewhere();
            if (does_storage_support_prewhere && shouldMoveToPrewhere())
            {
                
                expressions.prewhere_info = std::make_shared<PrewhereInfo>(
                    std::move(expressions.filter_info->actions),
                    std::move(expressions.filter_info->column_name));