Django doesn't set Postgres timezone to UTC when using psycopg3

[Fabi]

Configuration uses USE_TZ=True and database defaults to America/New_York. I would expect the connection then being set to UTC, but it is not changed:
`
In [4]: connectionsdefault.cursor().connection.info.timezone
Out[4]: zoneinfo.ZoneInfo(key='America/New_York')
`

The wrapper and the psycopg3 timezone adapter both think its UTC though:
`
In [5]: connectionsdefault.timezone
Out[5]: datetime.timezone.utc

In [6]: connectionsdefault.cursor().connection.adapters.get_loader(TIMESTAMPTZ_OID, Format.TEXT).timezone
Out[6]: datetime.timezone.utc
`

Looking at the code I think the problem is that the adapter gets initialized with self.timezone which then gets compared with self.timezone later again, resulting in a no-op:

• ​https://github.com/django/django/blob/31314980be428c0ab8a6cf40cce0a0c17ead8ec6/django/db/backends/postgresql/base.py#L243-L246
• ​https://github.com/django/django/blob/31314980be428c0ab8a6cf40cce0a0c17ead8ec6/django/db/backends/postgresql/base.py#L349-L354