Unexpected rounding of int64 values

Hi! Why does Cube round the last 3 digits in int64?
Result -9222709539351054000
But expected: -9222709539351053981

Related Cube.js schema
```javascript
cube(`test`, {
sql: `SELECT
-9222709539351053981 AS user_id`,
dimensions: {
user_id: {
sql: `user_id`,
type: `number`,
},
},
});
```

Related Cube.js generated SQL
```sql
SELECT
`test`.user_id AS `test__user_id`
FROM
(
SELECT
-9222709539351053981 AS user_id
) AS `test`
GROUP BY
1
ORDER BY
1 ASC
LIMIT
100;
```

DB: BigQuery