## Bug description

Monthly Active Users metric seems wrong when choosing "# Number" as chart type.

Number: 
![image](https://user-images.githubusercontent.com/513669/201980874-be7d9c0d-5c9c-4c1e-955c-ea4143c84061.png)

Line chart: 
![image](https://user-images.githubusercontent.com/513669/201980986-b17af929-84e5-4f6a-b7f8-23b7ac8bedbc.png)

**490 != 70**

## How to reproduce

1. Create a new insight using any event and the "Monthly active users" metric
2. Date range = This month + Grouped by = Day
3. Choose chart type as Number => remember value
4. Change chart type as Linear => check last data point

=> the 2 values do not match
=> in other words there's a diff between a total aggregation and an aggregation per bucket of time ?

## Environment

- [x] PostHog Cloud
posthog/queries/trends/total_volume.py
def _parse(result: List) -> List:
            aggregated_value = ensure_value_is_json_serializable(result[0][0]) if result and len(result) else 0
            seconds_in_interval = TIME_IN_SECONDS[filter.interval]
            time_range = enumerate_time_range(filter, seconds_in_interval)
            filter_params = filter.to_params()
            extra_params = {
                "entity_id": entity.id,
                "entity_type": entity.type,
                "entity_math": entity.math,
                "entity_order": entity.order,
            }
            parsed_params: Dict[str, str] = encode_get_request_params({**filter_params, **extra_params})
            return [
                {
                    "aggregated_value": aggregated_value,
                    "days": time_range,
                    "filter": filter_params,
                    "persons": {
                        "filter": extra_params,
                        "url": f"api/projects/{team_id}/persons/trends/?{urllib.parse.urlencode(parsed_params)}",
                    },
                }
            ]
        return _parse
    def _get_persons_url(