**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))



{
    SortDescription order_descr;
    order_descr.reserve(query.groupBy()->children.size());
    for (const auto & elem : query.groupBy()->children)
    {
        String name = elem->getColumnName();
        order_descr.emplace_back(name, 1, 1);
    }
    return order_descr;
}
static UInt64 getLimitUIntValue(const ASTPtr & node, ContextPtr context, const std::string & expr)
{
    const auto & [field, type] = evaluateConstantExpression(node, context);
    if (!isNativeNumber(type))
        throw Exception(
            "Illegal type " + type->getName() + " of " + expr + " expression, must be numeric type", ErrorCodes::INVALID_LIMIT_EXPRESSION);
    Field converted = convertFieldToType(field, DataTypeUInt64());
    if (converted.isNull())
        throw Exception(
            "The value " + applyVisitor(FieldVisitorToString(), field) + " of " + expr + " expression is not representable as UInt64",
            ErrorCodes::INVALID_LIMIT_EXPRESSION);
    return converted.safeGet<UInt64>();
}
static std::pair<UInt64, UInt64> getLimitLengthAndOffset(const ASTSelectQuery & query, ContextPtr context)