## Bug description

Last event ingested in /instance/status in system overview tab is UTC but looks like local time
Could be confusing to user to see UTC time there with no indication it's UTC.

Would be great if it showed up similar to time in live events https://app.posthog.com/events

## How to reproduce

1. Go to https://app.posthog.com/instance/status system overview tab (being in non UTC timezone) & check the "Last event ingested"

## Environment

- [x] PostHog Cloud
- [x] self-hosted PostHog (ClickHouse-based), version/commit: _please provide_
- [ ] self-hosted PostHog (Postgres-based, legacy), version/commit: _please provide_

## Additional context



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

posthog/clickhouse/system_status.py
import glob
import subprocess
import tempfile
import uuid
from datetime import timedelta
from os.path import abspath, basename, dirname, join
from typing import Dict, Generator, List, Tuple
import sqlparse
from clickhouse_driver import Client
from dateutil.relativedelta import relativedelta
from django.utils import timezone
from sentry_sdk.api import capture_exception
from posthog.api.dead_letter_queue import get_dead_letter_queue_events_last_24h, get_dead_letter_queue_size
from posthog.cache_utils import cache_for
from posthog.clickhouse.client.connection import make_ch_pool
from posthog.client import query_with_columns, sync_execute
from posthog.cloud_utils import is_cloud
from posthog.models.event.util import get_event_count, get_event_count_for_last_month, get_event_count_month_to_date
from posthog.models.session_recording_event.util import (
    get_recording_count_month_to_date,
    get_recording_events_count_month_to_date,
)
from posthog.settings import CLICKHOUSE_PASSWORD, CLICKHOUSE_STABLE_HOST, CLICKHOUSE_USER
SLOW_THRESHOLD_MS = 10000
SLOW_AFTER = relativedelta(hours=6)
CLICKHOUSE_FLAMEGRAPH_EXECUTABLE = abspath(join(dirname(__file__), "bin", "clickhouse-flamegraph"))
FLAMEGRAPH_PL = abspath(join(dirname(__file__), "bin", "flamegraph.pl"))
SystemStatusRow = Dict
def system_status() -> Generator[SystemStatusRow, None, None]: