BUG #17772: small glitch with autocompletion on CREATE DATABASE

The following bug has been logged on the website:

Bug reference: 17772
Logged by: Andrey Lizenko
Email address: lizenko79(at)gmail(dot)com
PostgreSQL version: 15.1
Operating system: Ubuntu 20.04.5 LTS
Description:

Hi, here is a very minor issue with a native psql client:

postgres=# create role atest login;
CREATE ROLE

postgres=# create role btest login;
CREATE ROLE

postgres=# create database atestdb owner to
<Pressing TAB here, nothing happens, roles list expected>

postgres=# create database atestdb owner atest;
CREATE DATABASE
<however, it works>

postgres=# reassign owned by atest to btest ;
REASSIGN OWNED
<it works also in terms of autocomplete>

postgres(at)xxx:~$ psql
psql (15.1 (Ubuntu 15.1-1.pgdg20.04+1))
Type "help" for help.

postgres=# show server_version;
server_version
----------------------------------
15.1 (Ubuntu 15.1-1.pgdg20.04+1)
(1 row)