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

storage/spider/spd_init_query.h

@@ -657,7 +657,7 @@ 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'),"
@@ -677,7 +677,7 @@ 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'),"