## 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/test/test_trends.py
response[0]["labels"],
            [
                "22-Dec-2019",
                "23-Dec-2019",
                "24-Dec-2019",
                "25-Dec-2019",
                "26-Dec-2019",
                "27-Dec-2019",
                "28-Dec-2019",
                "29-Dec-2019",
                "30-Dec-2019",
                "31-Dec-2019",
                "1-Jan-2020",
                "2-Jan-2020",
                "3-Jan-2020",
                "4-Jan-2020",
                "5-Jan-2020",
            ],
        )
        with freeze_time("2020-01-05T13:01:01Z"):
            response = Trends().run(
                Filter(
                    data={
                        "date_from": "-7d",
                        "events": [{"id": "sign up", "name": "sign up", "math": "weekly_active"}],
                    },
                    team=self.team,
                ),
                self.team,
            )