Bug in pg_stat_statements

Hi hackers.

In PG18 gthere is bug either in pg_stat_statements.c, either in
queryjumblefuncs.c.

Repro (you need Postgres build with asserts and pg_stat_statements
included in shared_preload_librarties:

create function f(a integer[], out x integer, out y integer) returns
record as $$            begin
       x = a[1];
       y = a[2];
   end;
$$ language plpgsql;

create table t(x integer);
select ((f(array[1,2]))).* from t;

The problems is caused by ((...)).* which cause to include the same
array literal twice in JumbleQuery.
But pg_stat_stataement assumes that any occurrence of constant is unique
and it cause assertion failure here:

        /* Copy next chunk (what precedes the next constant) */
        len_to_wrt = off - last_off;
        len_to_wrt -= last_tok_len;
        Assert(len_to_wrt >= 0);

So we should either exclude duplicates in RecordConstLocation
(queryjumblefuncs.c)
either in generate_normalized_query in pg_stat_statements.c

What is considered to be more correct?