## 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
("[4.95,10.05]", 2.0, [2.0, 0.0, 0.0, 0.0]),
                    ("[10.05,15.01]", 1.0, [0.0, 1.0, 0.0, 0.0]),
                ],
            )
    @test_with_materialized_columns(person_properties=["name"], verify_no_jsonextract=False)
    def test_trends_breakdown_single_aggregate_cohorts(self):
        _create_person(team_id=self.team.pk, distinct_ids=["Jane"], properties={"name": "Jane"})
        _create_person(team_id=self.team.pk, distinct_ids=["John"], properties={"name": "John"})
        _create_person(team_id=self.team.pk, distinct_ids=["Jill"], properties={"name": "Jill"})
        cohort1 = _create_cohort(
            team=self.team,
            name="cohort1",
            groups=[{"properties": [{"key": "name", "value": "Jane", "type": "person"}]}],
        )
        cohort2 = _create_cohort(
            team=self.team,
            name="cohort2",
            groups=[{"properties": [{"key": "name", "value": "John", "type": "person"}]}],
        )
        cohort3 = _create_cohort(
            team=self.team,
            name="cohort3",
            groups=[{"properties": [{"key": "name", "value": "Jill", "type": "person"}]}],
        )
        with freeze_time("2020-01-01 00:06:34"):
            _create_event(
                team=self.team,
                event="sign up",
                distinct_id="John",
                properties={"$some_property": "value", "$browser": "Chrome"},