Funtion `anon.hash` crash for text field containing `\`

Hi!

First and foremost, thanks for this amazing extension!

I am encountering an issue with function anon.hash upon text field containing \ character.

It happens because the text field cannot be converted to bytea, here is a concrete error message:

Error in query: ERROR: invalid input syntax for type bytea
LINE 1: select 'test\data'::bytea

To fix it, I created a new function that replace \ by a double one \\:

CREATE OR REPLACE FUNCTION anon.safe_hash(seed text)
 RETURNS text
 LANGUAGE sql
 STABLE PARALLEL SAFE STRICT SECURITY DEFINER
 SET search_path TO ''
AS $function$
  SELECT anon.hash(replace(seed, '\', '\\'));
$function$

I don't think it's an optimal fix.

Should it be fixed directly in the extension or not?