**Describe the bug**
Table creation with named tuples is broken

**How to reproduce**
ClickHouse server version 20.5.3.27

```
:) SELECT version();

┌─version()─┐
│ 20.5.3.27 │
└───────────┘
```
```
:) CREATE TABLE test.tuple
(
    `j` Tuple( a Int8, b String)
)
ENGINE = Memory;


Received exception from server (version 20.5.3):
Code: 62. DB::Exception: Received from localhost:9000. DB::Exception: Syntax error (data type): failed at position 9: Int8, b String). Expected one of: LIKE, GLOBAL NOT IN, AS, IS, OR, QuestionMark, BETWEEN, NOT LIKE, AND, Comma, alias, IN, Dot, NOT, Arrow, token, NOT IN, GLOBAL IN.
```
```
:) CREATE TABLE test.tuple_from_select
ENGINE = Memory AS
SELECT CAST((1, 'Test'), 'Tuple( a Int8,  b String)') AS j;


Received exception from server (version 20.5.3):
Code: 62. DB::Exception: Received from localhost:9000. DB::Exception: Syntax error (data type): failed at position 9: Int8, b String). Expected one of: LIKE, GLOBAL NOT IN, AS, IS, OR, QuestionMark, BETWEEN, NOT LIKE, AND, Comma, alias, IN, Dot, NOT, Arrow, token, NOT IN, GLOBAL IN.
```

**This works fine on 20.4.6.53:**
```
:) SELECT version();

┌─version()─┐
│ 20.4.6.53 │
└───────────┘
```
```
:) CREATE TABLE test.tuple
(
    `j` Tuple( a Int8, b String)
)
ENGINE = Memory;

Ok.
```
```
:) SHOW CREATE TABLE test.tuple

┌─statement───────────────────────────────────────────────────────────────────────┐
│ CREATE TABLE test.tuple
(
    `j` Tuple(
    a Int8, 
    b String)
)
ENGINE = Memory │
└─────────────────────────────────────────────────────────────────────────────────┘
```
```
:) CREATE TABLE test.tuple_from_select
ENGINE = Memory AS
SELECT CAST((1, 'Test'), 'Tuple( a Int8,  b String)') AS j;

Ok.
```
TableProperties properties = setProperties(create);
    
    bool created = doCreateTable(create, properties);
    if (!created)   
        return {};
    return fillTableIfNeeded(create);
}
bool InterpreterCreateQuery::doCreateTable(ASTCreateQuery & create,
                                           const InterpreterCreateQuery::TableProperties & properties)
{
    std::unique_ptr<DDLGuard> guard;
    String data_path;
    DatabasePtr database;
    const String table_name = create.table;
    bool need_add_to_database = !create.temporary;
    if (need_add_to_database)
    {
        /** If the request specifies IF NOT EXISTS, we allow concurrent CREATE queries (which do nothing).
          * If table doesn't exist, one thread is creating table, while others wait in DDLGuard.
          */
        guard = DatabaseCatalog::instance().getDDLGuard(create.database, table_name);
        database = DatabaseCatalog::instance().getDatabase(create.database);
        assertOrSetUUID(create, database);
        
        if (database->isTableExist(table_name, context))
        {
            
            if (create.if_not_exists)
                return false;