create a user same name function as pg_catalog.array_in caused the getSQLTypeQuery fail

[xiaozhongwang]

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Describe the issue
A clear and concise description of what the issue is.
create a user function and the name is same as array_in in user schema, like as public.

Driver Version?
latest version

Java Version?
JDK 1.8

OS Version?
CentOS 7

PostgreSQL Version?
PostgreSQL 12

To Reproduce
Steps to reproduce the behaviour:

create a user function

CREATE OR REPLACE FUNCTION public.array_in(anyarray, oid, integer)
 RETURNS anyarray
 LANGUAGE internal
 STABLE PARALLEL SAFE STRICT
AS $function$array_in$function$
;

make sure the function is created

the result as following

postgres=# \df array_in
                            List of functions
   Schema   |   Name   | Result data type |  Argument data types   | Type
------------+----------+------------------+------------------------+------
 pg_catalog | array_in | anyarray         | cstring, oid, integer  | func
 public     | array_in | anyarray         | anyarray, oid, integer | func
(2 rows)

execute the sql in getSQLTypeQuery

postgres=# SELECT typinput='array_in'::regproc as is_array, typtype, typname, pg_type.oid   FROM pg_catalog.pg_type   LEFT JOIN (select ns.oid as nspoid, ns.nspname, r.r           from pg_namespace as ns     join ( select s.r, (current_schemas(false))[s.r] as nspname                    from generate_series(1, array_upper(current_schemas(false), 1)) as s(r) ) as r          using ( nspname )        ) as sp    ON sp.nspoid = typnamespace  WHERE pg_type.oid = $1  ORDER BY sp.r, pg_type.oid DESC
postgres-# ;
ERROR:  more than one function named "array_in"
LINE 1: SELECT typinput='array_in'::regproc as is_array, typtype, ty...
                        ^
postgres=# 

Expected behaviour
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And what actually happens

Logs
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