**Describe the unexpected behaviour**
OFFSET can work without ORDER BY , but OFFSET FETCH cannot work without ORDER BY, and throw strange syntax error: `failed at 'FETCH' Expected FETCH`.

**How to reproduce**
* Clickhouse Version: `21.10.2.15`
* `CREATE TABLE test_fetch (a INT, b INT) ENGINE=MergeTree ORDER BY b;`
* `INSERT INTO test_fetch VALUES (1, 1), (2, 1), (3, 4), (1, 4), (5, 4), (0, 6), (5, 7);`
* `OFFSET` without `ORDER BY` works: `SELECT * FROM test_fetch OFFSET 3 ROW;`
* `OFFSET FETCH` with `ORDER BY` works: `SELECT * FROM test_fetch ORDER BY a OFFSET 3 ROWS FETCH FIRST 3 ROWS ONLY;`
* `OFFSET FETCH` without `ORDER BY`  does ***NOT*** work: `SELECT * FROM test_fetch OFFSET 3 ROWS FETCH FIRST 3 ROWS ONLY;`

**Expected behavior**
Same behavior or correct error message.

**Error message and/or stacktrace**
![OFFSET-FETCH](https://user-images.githubusercontent.com/3500109/139619530-04433404-73ed-4fc6-a76a-68cb65a5bb31.png)


assert (limit_by_expression_list == nullptr);
        
        limit_by_expression_list = distinct_on_expression_list;
        limit_by_length = std::make_shared<ASTLiteral>(Field{UInt8(1)});
        distinct_on_expression_list = nullptr;
    }
    
    if (top_length)
        limit_length = top_length;
    
    if (s_limit.ignore(pos, expected))
    {
        if (!limit_by_length || limit_length)
            return false;
        ParserToken s_comma(TokenType::Comma);
        if (!exp_elem.parse(pos, limit_length, expected))
            return false;
        if (s_comma.ignore(pos, expected))
        {
            limit_offset = limit_length;
            if (!exp_elem.parse(pos, limit_length, expected))
                return false;
        }
        else if (s_offset.ignore(pos, expected))
        {
            if (!exp_elem.parse(pos, limit_offset, expected))
                return false;
        }
        if (s_with_ties.ignore(pos, expected))
            select_query->limit_with_ties = true;