**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))



{
    FillColumnDescription descr;
    if (order_by_elem.fill_from)
        descr.fill_from = getWithFillFieldValue(order_by_elem.fill_from, context);
    if (order_by_elem.fill_to)
        descr.fill_to = getWithFillFieldValue(order_by_elem.fill_to, context);
    if (order_by_elem.fill_step)
        descr.fill_step = getWithFillFieldValue(order_by_elem.fill_step, context);
    else
        descr.fill_step = order_by_elem.direction;
    if (applyVisitor(FieldVisitorAccurateEquals(), descr.fill_step, Field{0}))
        throw Exception("WITH FILL STEP value cannot be zero", ErrorCodes::INVALID_WITH_FILL_EXPRESSION);
    if (order_by_elem.direction == 1)
    {
        if (applyVisitor(FieldVisitorAccurateLess(), descr.fill_step, Field{0}))
            throw Exception("WITH FILL STEP value cannot be negative for sorting in ascending direction",
                ErrorCodes::INVALID_WITH_FILL_EXPRESSION);
        if (!descr.fill_from.isNull() && !descr.fill_to.isNull() &&
            applyVisitor(FieldVisitorAccurateLess(), descr.fill_to, descr.fill_from))
        {
            throw Exception("WITH FILL TO value cannot be less than FROM value for sorting in ascending direction",
                ErrorCodes::INVALID_WITH_FILL_EXPRESSION);
        }
    }
    else
    {
        if (applyVisitor(FieldVisitorAccurateLess(), Field{0}, descr.fill_step))
            throw Exception("WITH FILL STEP value cannot be positive for sorting in descending direction",
                ErrorCodes::INVALID_WITH_FILL_EXPRESSION);
        if (!descr.fill_from.isNull() && !descr.fill_to.isNull() &&