MDEV-32485 Fix Spider upgrade failure caused by duplication in mysql.func

Author: mariadb-YuchenPei

storage/spider/spd_init_query.h

@@ -594,7 +594,7 @@ static LEX_STRING spider_init_queries[] = {
  "if @win_plugin = 0 then"
  " begin not atomic"
  " declare exit handler for 1041, 1123"
- " insert into mysql.func values"
+ " replace into mysql.func values"
  " ('spider_direct_sql', 2, 'ha_spider.so', 'function'),"
  " ('spider_bg_direct_sql', 2, 'ha_spider.so', 'aggregate'),"
  " ('spider_ping_table', 2, 'ha_spider.so', 'function'),"
@@ -614,7 +614,7 @@ static LEX_STRING spider_init_queries[] = {
  "else"
  " begin not atomic"
  " declare exit handler for 1041, 1123"
- " insert into mysql.func values"
+ " replace into mysql.func values"
  " ('spider_direct_sql', 2, 'ha_spider.dll', 'function'),"
  " ('spider_bg_direct_sql', 2, 'ha_spider.dll', 'aggregate'),"
  " ('spider_ping_table', 2, 'ha_spider.dll', 'function'),"