## 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
properties={"$some_prop": "some_val"},
                uuid=test_person_ids[-1],
            )
            flush_persons_and_events()
            data = {"date_from": "-7d", "events": [{"id": "sign up", "math": "dau"}], "limit": 5}
            with override_instance_config("PERSON_ON_EVENTS_ENABLED", True):
                from posthog.models.team import util
                util.can_enable_person_on_events = True
                response = Trends().run(Filter(data=data), self.team)
                self.assertEqual(response[0]["data"], [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 10.0])
                url = response[0]["persons_urls"][7]["url"]
                people_response = self.client.get(f"/{url}").json()
                
                self.assertIsNotNone(people_response["next"])
                self.assertEqual(people_response["missing_persons"], 5)
                next_url = people_response["next"]
                second_people_response = self.client.get(f"{next_url}").json()
                self.assertIsNotNone(second_people_response["next"])
                self.assertEqual(second_people_response["missing_persons"], 4)
                first_load_ids = sorted(str(person["id"]) for person in people_response["results"][0]["people"])
                second_load_ids = sorted(str(person["id"]) for person in second_people_response["results"][0]["people"])
                self.assertEqual(len(first_load_ids + second_load_ids), 1)
                self.assertEqual(first_load_ids + second_load_ids, [str(person.uuid)])
                third_people_response = self.client.get(f"/{second_people_response['next']}").json()
                self.assertIsNone(third_people_response["next"])
                self.assertFalse(third_people_response["missing_persons"])
                third_load_ids = sorted(str(person["id"]) for person in third_people_response["results"][0]["people"])
                self.assertEqual(third_load_ids, [])
    
    def test_no_props(self):