## 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
@test_with_materialized_columns(["$current_url"])
    def test_action_with_prop(self):
        _create_person(
            team_id=self.team.pk, distinct_ids=["blabla", "anonymous_id"], properties={"$some_prop": "some_val"}
        )
        sign_up_action = Action.objects.create(team=self.team, name="sign up")
        ActionStep.objects.create(
            action=sign_up_action, event="sign up", properties={"$current_url": "https://posthog.com/feedback/1234"}
        )
        with freeze_time("2020-01-02T13:01:01Z"):
            _create_event(
                team=self.team,
                event="sign up",
                distinct_id="blabla",
                properties={"$current_url": "https://posthog.com/feedback/1234"},
            )
        with freeze_time("2020-01-04T13:01:01Z"):
            action_response = Trends().run(
                Filter(
                    data={
                        "actions": [{"id": sign_up_action.id, "math": "dau"}],
                        "properties": [{"key": "$current_url", "value": "fake"}],
                    }
                ),
                self.team,
            )
        # 
        self.assertEqual(action_response[0]["count"], 0)
    @test_with_materialized_columns(["$current_url"], verify_no_jsonextract=False)
    def test_combine_all_cohort_and_icontains(self):