## 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_events()
        with freeze_time("2020-01-04T13:00:01Z"):
            daily_response = Trends().run(
                Filter(
                    data={"display": TRENDS_TABLE, "interval": "week", "events": [{"id": "sign up", "math": "dau"}]}
                ),
                self.team,
            )
        with freeze_time("2020-01-04T13:00:01Z"):
            weekly_response = Trends().run(
                Filter(data={"display": TRENDS_TABLE, "interval": "day", "events": [{"id": "sign up", "math": "dau"}]}),
                self.team,
            )
        self.assertEqual(daily_response[0]["aggregated_value"], 1)
        self.assertEqual(daily_response[0]["aggregated_value"], weekly_response[0]["aggregated_value"])
    @test_with_materialized_columns(["$math_prop"])
    def test_trends_single_aggregate_math(self):
        _create_person(
            team_id=self.team.pk, distinct_ids=["blabla", "anonymous_id"], properties={"$some_prop": "some_val"}
        )
        with freeze_time("2020-01-01 00:06:34"):
            _create_event(team=self.team, event="sign up", distinct_id="blabla", properties={"$math_prop": 1})
            _create_event(team=self.team, event="sign up", distinct_id="blabla", properties={"$math_prop": 1})
            _create_event(team=self.team, event="sign up", distinct_id="blabla", properties={"$math_prop": 1})
            _create_event(team=self.team, event="sign up", distinct_id="blabla", properties={"$math_prop": 2})