fix(DB/Creature): Captured Totem shouldn't be attackable (#22142)

Item: Captured Totem from Quest: The Grimtotem Weapon no longer generates aggro nor can't be attacked

data/sql/updates/pending_db_world/rev_1747547690190698400.sql

@@ -0,0 +1,2 @@
+-- Captured Totem - NON_ATTACKABLE
+UPDATE `creature_template` SET `unit_flags` = `unit_flags`|2 WHERE (`entry` = 23811);