## Bug description

See [this graph (internal link)](https://app.posthog.com/insights?insight=TRENDS&actions=%5B%7B%22id%22%3A4912%2C%22math%22%3A%22dau%22%2C%22name%22%3A%22Discovered%20Learning%22%2C%22type%22%3A%22actions%22%2C%22order%22%3A0%2C%22properties%22%3A%5B%7B%22key%22%3A%22realm%22%2C%22type%22%3A%22person%22%2C%22value%22%3A%5B%22cloud%22%5D%2C%22operator%22%3A%22exact%22%7D%5D%2C%22math_property%22%3Anull%7D%2C%7B%22id%22%3A7307%2C%22math%22%3A%22total%22%2C%22name%22%3A%22Insights%20Error%20or%20Timeout%20-%20Cloud%22%2C%22type%22%3A%22actions%22%2C%22order%22%3A1%2C%22properties%22%3A%5B%5D%2C%22math_property%22%3Anull%7D%5D&display=ActionsLineGraph&formula=B%2FA&interval=week&date_from=-90d&filter_test_accounts=true&properties=%5B%5D&breakdown=realm&breakdown_type=person#fromItem=190864&fromItemName=%23%20Errors%20Seen%20%2F%20Activated%20User%20-%20Cloud&fromDashboard=3346)

Using formulas + break down doesn't work.

## Expected behavior

Should work.

## How to reproduce

1.
2.
3.

## Environment

- [ ] PostHog Cloud
- [ ] self-hosted PostHog, version/commit: _please provide_

## Additional context



#### *Thank you* for your bug report – we love squashing them!

ee/clickhouse/queries/trends/breakdown.py
self, aggregate_operation: str, math_params: Dict, entity: Entity, filter: Filter, team_id: int
    ):
        values_arr = get_breakdown_event_prop_values(
            filter, entity, aggregate_operation, team_id, extra_params=math_params
        )
        
        assert isinstance(filter.breakdown, str)
        breakdown_value, _ = get_property_string_expr("events", filter.breakdown, "%(key)s", "properties")
        return (
            {"values": values_arr, "key": filter.breakdown},
            BREAKDOWN_PROP_JOIN_SQL,
            {"breakdown_value_expr": breakdown_value},
            breakdown_value,
        )
    def _parse_single_aggregate_result(