REASSIGN OWNED BY alters objects in other database.

Hi hackers.

I experience following behaviour.

```

postgres=# create role u1;
CREATE ROLE
postgres=# create role su;
CREATE ROLE
postgres=# create database d1 owner u1;
CREATE DATABASE
postgres=# grant pg_create_subscription to u1;
GRANT ROLE
postgres=# \c d1 u1
connection to server on socket "/tmp/.s.PGSQL.5432" failed: FATAL:
role "u1" is not permitted to log in
Previous connection kept
postgres=# \c d1
You are now connected to database "d1" as user "reshke".
d1=# set session^C
d1=# set session authorization u1;
SET
d1=> create subscription s1 CONNECTION 'password=2' PUBLICATION pb1
with (connect = false, enabled=false);
WARNING: subscription was created, but is not connected
HINT: To initiate replication, you must manually create the
replication slot, enable the subscription, and alter the subscription
to refresh publications.
CREATE SUBSCRIPTION

d1=# \c postgres
postgres=# \c d1
d1=# \dRs
List of subscriptions
Name | Owner | Enabled | Publication
------+-------+---------+-------------
s1 | u1 | f | {pb1}
(1 row)

d1=# \c postgres
You are now connected to database "postgres" as user "reshke".
postgres=# reassign owned by u1 to su;
REASSIGN OWNED
postgres=# \c d1
You are now connected to database "d1" as user "reshke".
d1=# \dRs
List of subscriptions
Name | Owner | Enabled | Publication
------+-------+---------+-------------
s1 | su | f | {pb1}
(1 row)

d1=#
```

So, REASSIGN OWNER executed in database postgres alters subscription
owner, which is created in another database. I am not myself confident
that this is actually wrong... Is this a bug?

--
Best regards,
Kirill Reshke