**Describe the bug**
Setting `transform_null_in` works incorrectly with `IN` operator over tuples.

**How to reproduce**
1.
```
CREATE TABLE null_in_1 (u UInt32, n Nullable(UInt32)) ENGINE = Memory;
INSERT INTO null_in_1 VALUES (1, NULL), (2, 2), (3, NULL), (4, 4), (5, NULL);
```

```
SET transform_null_in = 1;
SELECT count() FROM null_in_1 WHERE (u, n) IN ((42, NULL));

┌─count()─┐
│       3 │
└─────────┘
```

It interprets all rows, where `n` is `NULL` as matched, despite the value of `u`.


2.
```
CREATE TABLE null_in_1 (a Nullable(UInt32), b Nullable(UInt32)) ENGINE = Memory;
INSERT INTO null_in_1 VALUES (1, NULL) (0, NULL) (NULL, NULL) (NULL, 1) (NULL, 0) (0, 0) (1, 1);
```

```
SET transform_null_in = 1;
SELECT count() FROM null_in_1 WHERE (a, b) IN (0, NULL);

┌─count()─┐
│       3 │
└─────────┘

SELECT count() FROM null_in_1 WHERE (a, b) IN (NULL, 0);

┌─count()─┐
│       3 │
└─────────┘

SELECT count() FROM null_in_1 WHERE (a, b) IN (0, 0);

┌─count()─┐
│       3 │
└─────────┘
```

It doesn't see the difference between default value and null value.

{
    if (data_types.size() != num_key_columns)
    {
        std::stringstream message;
        message << "Number of columns in section IN doesn't match. "
                << num_key_columns << " at left, " << data_types.size() << " at right.";
        throw Exception(message.str(), ErrorCodes::NUMBER_OF_COLUMNS_DOESNT_MATCH);
    }
}
bool Set::areTypesEqual(size_t set_type_idx, const DataTypePtr & other_type) const
{
    return removeNullable(recursiveRemoveLowCardinality(data_types[set_type_idx]))->equals(*removeNullable(recursiveRemoveLowCardinality(other_type)));
}
void Set::checkTypesEqual(size_t set_type_idx, const DataTypePtr & other_type) const
{
    if (!this->areTypesEqual(set_type_idx, other_type))
        throw Exception("Types of column " + toString(set_type_idx + 1) + " in section IN don't match: "
                        + other_type->getName() + " on the left, "
                        + data_types[set_type_idx]->getName() + " on the right", ErrorCodes::TYPE_MISMATCH);
}
MergeTreeSetIndex::MergeTreeSetIndex(const Columns & set_elements, std::vector<KeyTuplePositionMapping> && index_mapping_)