Allow implicit lateral join for table functions

According to the MySQL spec:

> MySQL always treats a join with a table function such as [JSON_TABLE()](https://dev.mysql.com/doc/refman/8.4/en/json-table-functions.html#function_json-table) as though LATERAL had been used. Since the LATERAL keyword is implicit, it is not allowed before JSON_TABLE(); this is also according to the SQL standard.

This suggests that the following two statements are equivalent, but only the first is accepted.

```sql
select l.commit_order as child, r.commit_order as parent from dolt_log() l join lateral (select * from dolt_log(l.commit_hash)) r; -- allowed
select l.commit_order as child, r.commit_order as parent from dolt_log() l join dolt_log(l.commit_hash) r; -- rejected
```

The latter statement results in the error `table not found: l`