fix(Scripts/Darkshore): ensure Kerlonian Evershade is always in bear form (#17062)

initial

data/sql/updates/pending_db_world/remove-aura-from-kerlonian.sql

@@ -0,0 +1,2 @@
+--
+UPDATE `creature_addon` SET `auras` = '' WHERE `guid` = 39059;

src/server/scripts/Kalimdor/zone_darkshore.cpp

@@ -175,6 +175,7 @@ enum Kerlonian
 
     SPELL_SLEEP_VISUAL          = 25148,
     SPELL_AWAKEN                = 17536,
+    SPELL_BEAR_FORM             = 18309,
     QUEST_SLEEPER_AWAKENED      = 5321,
     NPC_LILADRIS                = 11219                    //attackers entries unknown
 };
@@ -194,6 +195,8 @@ public:
         void Reset() override
         {
             FallAsleepTimer = urand(10000, 45000);
+
+            DoCastSelf(SPELL_BEAR_FORM);
         }
 
         void MoveInLineOfSight(Unit* who) override