Discrepancy with zoneinfo

[_Alex_]

I found a discrepancy between `pytz` and `zoneinfo` running a test suite on one of my projects after migrating from `pytz` to `zoneinfo`. This test case was built using values described [in this blog post](https://kite.com/python/docs/pytz.tzfile.DstTzInfo.normalize), to test that I properly used `normalize` at some point.

```python
>>> t = 2002, 10, 27, 1, 0
>>> z = 'America/New_York'
>>> pytz.timezone(z).localize(datetime(*t)) - datetime(*t, tzinfo=ZoneInfo(z))
datetime.timedelta(seconds=3600) # I would have expected timedelta(0)
```

Edit: this was tested with `backports.zoneinfo==0.2.0` and `pytz==2020.1` on CPython 3.7.5.

[_Alex_ (alexgtk19)]

After a detailed explanation from zoneinfo maintainer here https://github.com/pganssle/zoneinfo/issues/79.
This is an expected behavior due to PEP 495.