Scripts/Shadowmoon Valley: Dragonmaw Peon

Fixes issue where NPC does not attack, even when aggro'd.
Fixes #16210
Closes #16204

(cherry picked from commit ad425f9f17)

src/server/scripts/Outland/zone_shadowmoon_valley.cpp

@@ -560,6 +560,10 @@ public:
                     me->DealDamage(me, me->GetHealth(), NULL, DIRECT_DAMAGE, SPELL_SCHOOL_MASK_NORMAL, NULL, false);
                 } else PoisonTimer -= diff;
             }
+            if (!UpdateVictim())
+                return;
+
+            DoMeleeAttackIfReady();
         }
     };
 };