MariaDB crash triggered by recursive CTE with GET_LOCK and JSON path expression

~~~sql
SELECT LOWER ( ( WITH RECURSIVE x ( x ) AS ( SELECT 1 EXCEPT SELECT GET_LOCK ( NULL , 0 ) ) SELECT DISTINCT x FROM ( SELECT 1 AS x UNION SELECT 2 ) AS x WHERE x IN ( SELECT JSON_REPLACE ( '1' , UPPER ( CAST( NULL AS CHAR ) ) , 100 ) ) ORDER BY x LIMIT 1 ) ) ;
~~~

1. 1. Expected result
      The server should either execute the query or return a normal SQL error without crashing.

1. 1. Actual result
      The fuzzing run observed a server crash. The deduplicated stack signature is:
      ~~~
      stack:json_find_path|_ZN21Item_func_json_insert7val_strEP6String|_ZN4Item17save_str_in_fieldEP5Fieldb|_ZN4Item13save_in_fieldEP5Fieldb|_ZN14store_key_item10copy_innerEv|_ZN9store_key4copyEP3THD|_ZL18create_ref_for_keyP4JOINP13st_join_tableP8keyuse_tby|_ZN4JOIN20get_best_combinationEv
      ~~~