## 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
"7-Nov-2020",
                        "8-Nov-2020",
                        "9-Nov-2020",
                        "10-Nov-2020",
                        "11-Nov-2020",
                        "12-Nov-2020",
                        "13-Nov-2020",
                        "14-Nov-2020",
                    ],
                    "days": [
                        "2020-10-31",
                        "2020-11-01",
                        "2020-11-02",
                        "2020-11-03",
                        "2020-11-04",
                        "2020-11-05",
                        "2020-11-06",
                        "2020-11-07",
                        "2020-11-08",
                        "2020-11-09",
                        "2020-11-10",
                        "2020-11-11",
                        "2020-11-12",
                        "2020-11-13",
                        "2020-11-14",
                    ],
                }
            ],
        )
    def test_last30days_timerange(self):