## 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
self._create_groups()
        Person.objects.create(team_id=self.team.pk, distinct_ids=["person1"], properties={"key": "value"})
        _create_event(event="$pageview", distinct_id="person1", team=self.team, timestamp="2020-01-02T12:00:00Z")
        _create_event(
            event="$pageview",
            distinct_id="person1",
            team=self.team,
            properties={"$group_0": "org:5"},
            timestamp="2020-01-02T12:00:00Z",
        )
        _create_event(
            event="$pageview",
            distinct_id="person1",
            team=self.team,
            properties={"$group_0": "org:6"},
            timestamp="2020-01-02T12:00:00Z",
        )
        _create_event(
            event="$pageview",
            distinct_id="person1",
            team=self.team,
            properties={"$group_0": "org:6", "$group_1": "company:10"},
            timestamp="2020-01-02T12:00:00Z",
        )
        filter = Filter(
            {
                "date_from": "2020-01-01T00:00:00Z",
                "date_to": "2020-01-12T00:00:00Z",
                "events": [{"id": "$pageview", "type": "events", "order": 0}],
                "properties": [