replacement method anon.right is implemented incorrectly

steps to reproduce:

select anon.right('foo', 2) limit 1;

output:

ERROR:  function pg_catalog.md5(text, integer) does not exist at character 9
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
QUERY:   SELECT pg_catalog.md5($1,$2)

checking the implementation using \ef anon.right shows the following:

CREATE OR REPLACE FUNCTION anon."right"(text, integer)
 RETURNS text
 LANGUAGE sql
 PARALLEL SAFE
AS $function$ SELECT pg_catalog.md5($1,$2) $function$

expected behavior is that anon.right should not use md5 as part of the implementation.